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RFL_0769002.exe

AsyncRAT AntiDebug PE File PE32 .NET EXE AntiVM
  1. Resubmit sample
Category Machine Started Completed
FILE s1_win7_x6401 June 12, 2021, 11:22 a.m. June 12, 2021, 11:24 a.m.
Size 521.0KB
Type PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5 3c88c6ef1a906bc81fc6b5b7fc478e0c
SHA256 1754283e0b6bbbbeb69f165e54e3795d3e34ca14aa7bd8bd3b7dcdd97f7dfca8
CRC32 4FC43E8C
ssdeep 12288:A4tWKG1Gu7iTQezjBwaxITEI3ENCYyuqoTGYA6TJqiU1:A4tc1Gu7KzurgI3FBOAmqb1
Yara
  • Win_Backdoor_AsyncRAT_Zero - Win Backdoor AsyncRAT
  • PE_Header_Zero - PE File Signature
  • Is_DotNET_EXE - (no description)
  • IsPE32 - (no description)

Name Response Post-Analysis Lookup
www.quangcaosonthach.com
CNAME quangcaosonthach.com
A 103.237.145.7
103.237.145.7
IP Address Status Action
103.237.145.7 Active Moloch
164.124.101.2 Active Moloch

Suricata Alerts

Flow SID Signature Category
TCP 192.168.56.101:49205 -> 103.237.145.7:80 2031412 ET MALWARE FormBook CnC Checkin (GET) Malware Command and Control Activity Detected
TCP 192.168.56.101:49205 -> 103.237.145.7:80 2031449 ET MALWARE FormBook CnC Checkin (GET) Malware Command and Control Activity Detected
TCP 192.168.56.101:49205 -> 103.237.145.7:80 2031453 ET MALWARE FormBook CnC Checkin (GET) Malware Command and Control Activity Detected

Suricata TLS

No Suricata TLS

suspicious_features GET method with no useragent header suspicious_request GET http://www.quangcaosonthach.com/gw2/?DVldV=nK+cpShbKNzMzU5qLnlc+tBFBddRBf6O1ztjvSAMnluiyaRb30M36lbYqq0lmPBz7QeF2Hp1&mnSl=Txlh
request GET http://www.quangcaosonthach.com/gw2/?DVldV=nK+cpShbKNzMzU5qLnlc+tBFBddRBf6O1ztjvSAMnluiyaRb30M36lbYqq0lmPBz7QeF2Hp1&mnSl=Txlh
Time & API Arguments Status Return Repeated

NtAllocateVirtualMemory

 process_identifier: 1348
region_size: 3158016
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x00910000
allocation_type: 12288 (MEM_COMMIT|MEM_RESERVE)
process_handle: 0xffffffff
1 0 0
section {u'size_of_data': u'0x0007b000', u'virtual_address': u'0x00002000', u'entropy': 7.993007658617986, u'name': u'.text', u'virtual_size': u'0x0007afe4'} entropy 7.99300765862 description A section with a high entropy has been found
entropy 0.963761018609 description Overall entropy of this PE file is high
Time & API Arguments Status Return Repeated

LookupPrivilegeValueW

 system_name:
privilege_name: SeDebugPrivilege
1 1 0
description (no description) rule DebuggerCheck__GlobalFlags
description (no description) rule DebuggerCheck__QueryInfo
description (no description) rule DebuggerHiding__Thread
description (no description) rule DebuggerHiding__Active
description (no description) rule ThreadControl__Context
description (no description) rule SEH__vectored
description Bypass DEP rule disable_dep
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