darkcomet | d29bcf69e32558045ba219c136c85d1bbc552300caec42cc6c630f6ac8c86b12

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 16:38

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General

Target

fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
Size

1.5MB
MD5

fab9010dde4439f3b8d2e91d718b8b37
SHA1

25f3bfcbab66e99339c52117ccf386fc6831b8be
SHA256

d29bcf69e32558045ba219c136c85d1bbc552300caec42cc6c630f6ac8c86b12
SHA512

af5ab132fbe619338d5c4cf4c54f5304023200ffe5493e7e74137d4d64296838c3e2e2e1c10521b11aada37581e1e644d45ad0a548b49eaeb978df66e32df373
SSDEEP

24576:KwnU4TDLPH5BwT91EVOeW+4A6l2mJdEgMffHtNSfpzMaVI9x51oL:lntTXP56R1E05+4ZdrEgMt0MaV6GL

Score

10^/10

darkcomet evasion persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

Encryptado.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	Encryptado.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
872	attrib.exe
4416	attrib.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exeEncryptado.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	Encryptado.exe

Executes dropped EXE 2 IoCs

Processes:

Encryptado.exemsdcsc.exe

pid	Process
1692	Encryptado.exe
4308	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Encryptado.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	Encryptado.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops desktop.ini file(s) 2 IoCs

Processes:

fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

Processes:

fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Windows\assembly	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid	Process
4308	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

Processes:

fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exeEncryptado.exemsdcsc.exe

description	pid	Process
Token: SeDebugPrivilege	4288	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1692	Encryptado.exe
Token: SeSecurityPrivilege	1692	Encryptado.exe
Token: SeTakeOwnershipPrivilege	1692	Encryptado.exe
Token: SeLoadDriverPrivilege	1692	Encryptado.exe
Token: SeSystemProfilePrivilege	1692	Encryptado.exe
Token: SeSystemtimePrivilege	1692	Encryptado.exe
Token: SeProfSingleProcessPrivilege	1692	Encryptado.exe
Token: SeIncBasePriorityPrivilege	1692	Encryptado.exe
Token: SeCreatePagefilePrivilege	1692	Encryptado.exe
Token: SeBackupPrivilege	1692	Encryptado.exe
Token: SeRestorePrivilege	1692	Encryptado.exe
Token: SeShutdownPrivilege	1692	Encryptado.exe
Token: SeDebugPrivilege	1692	Encryptado.exe
Token: SeSystemEnvironmentPrivilege	1692	Encryptado.exe
Token: SeChangeNotifyPrivilege	1692	Encryptado.exe
Token: SeRemoteShutdownPrivilege	1692	Encryptado.exe
Token: SeUndockPrivilege	1692	Encryptado.exe
Token: SeManageVolumePrivilege	1692	Encryptado.exe
Token: SeImpersonatePrivilege	1692	Encryptado.exe
Token: SeCreateGlobalPrivilege	1692	Encryptado.exe
Token: 33	1692	Encryptado.exe
Token: 34	1692	Encryptado.exe
Token: 35	1692	Encryptado.exe
Token: 36	1692	Encryptado.exe
Token: SeIncreaseQuotaPrivilege	4308	msdcsc.exe
Token: SeSecurityPrivilege	4308	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4308	msdcsc.exe
Token: SeLoadDriverPrivilege	4308	msdcsc.exe
Token: SeSystemProfilePrivilege	4308	msdcsc.exe
Token: SeSystemtimePrivilege	4308	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4308	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4308	msdcsc.exe
Token: SeCreatePagefilePrivilege	4308	msdcsc.exe
Token: SeBackupPrivilege	4308	msdcsc.exe
Token: SeRestorePrivilege	4308	msdcsc.exe
Token: SeShutdownPrivilege	4308	msdcsc.exe
Token: SeDebugPrivilege	4308	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4308	msdcsc.exe
Token: SeChangeNotifyPrivilege	4308	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4308	msdcsc.exe
Token: SeUndockPrivilege	4308	msdcsc.exe
Token: SeManageVolumePrivilege	4308	msdcsc.exe
Token: SeImpersonatePrivilege	4308	msdcsc.exe
Token: SeCreateGlobalPrivilege	4308	msdcsc.exe
Token: 33	4308	msdcsc.exe
Token: 34	4308	msdcsc.exe
Token: 35	4308	msdcsc.exe
Token: 36	4308	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
4308	msdcsc.exe

Suspicious use of WriteProcessMemory 62 IoCs

Processes:

fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exeEncryptado.execmd.execmd.exemsdcsc.exe

description	pid	Process	procid_target
PID 4288 wrote to memory of 1692	4288	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe	91
PID 4288 wrote to memory of 1692	4288	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe	91
PID 4288 wrote to memory of 1692	4288	fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe	91
PID 1692 wrote to memory of 4076	1692	Encryptado.exe	94
PID 1692 wrote to memory of 4076	1692	Encryptado.exe	94
PID 1692 wrote to memory of 4076	1692	Encryptado.exe	94
PID 1692 wrote to memory of 464	1692	Encryptado.exe	96
PID 1692 wrote to memory of 464	1692	Encryptado.exe	96
PID 1692 wrote to memory of 464	1692	Encryptado.exe	96
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 2000	1692	Encryptado.exe	97
PID 1692 wrote to memory of 4308	1692	Encryptado.exe	99
PID 1692 wrote to memory of 4308	1692	Encryptado.exe	99
PID 1692 wrote to memory of 4308	1692	Encryptado.exe	99
PID 4076 wrote to memory of 872	4076	cmd.exe	100
PID 4076 wrote to memory of 872	4076	cmd.exe	100
PID 4076 wrote to memory of 872	4076	cmd.exe	100
PID 464 wrote to memory of 4416	464	cmd.exe	102
PID 464 wrote to memory of 4416	464	cmd.exe	102
PID 464 wrote to memory of 4416	464	cmd.exe	102
PID 4308 wrote to memory of 4292	4308	msdcsc.exe	101
PID 4308 wrote to memory of 4292	4308	msdcsc.exe	101
PID 4308 wrote to memory of 4292	4308	msdcsc.exe	101
PID 4308 wrote to memory of 4276	4308	msdcsc.exe	103
PID 4308 wrote to memory of 4276	4308	msdcsc.exe	103
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104
PID 4308 wrote to memory of 2188	4308	msdcsc.exe	104

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
872	attrib.exe
4416	attrib.exe

C:\Users\Admin\AppData\Local\Temp\fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fab9010dde4439f3b8d2e91d718b8b37_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4288
- C:\Users\Admin\AppData\Local\Temp\Encryptado.exe
  "C:\Users\Admin\AppData\Local\Temp\Encryptado.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\Encryptado.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4076
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\Encryptado.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:872
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:464
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4416
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2000
- - C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4308
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      PID:4292
  - - C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      4⤵
      PID:4276
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:2188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Encryptado.exe

Filesize
760KB

MD5
79f7a2e40afe33057b91f9587922f715

SHA1
1ea9f0b555a38494973fddd22c0bafc9245cb9ad

SHA256
f81835bcc1344a249a9659eb153ff6b46f41122225713fbf5c9a771d6367031c

SHA512
317abbc559e301a80ff13d27abb4d3534e5b7ed616ad39edf43bafe6b37d23824c4a1a4db422ed06b7078108d1adf5eabec213433cd4778580b59420d3d143fe

Download Submit
memory/1692-156-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/2000-169-0x0000000000B00000-0x0000000000B01000-memory.dmp

Filesize
4KB

Download
memory/2188-175-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/4288-40-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-10-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-8-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-46-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-12-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-14-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-16-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-18-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-20-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-22-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-24-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-26-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-28-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-30-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-32-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-48-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-36-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-38-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-0-0x0000000074600000-0x0000000074BB1000-memory.dmp

Filesize
5.7MB

Download
memory/4288-42-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-1-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/4288-7-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-34-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-50-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-52-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-54-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-56-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-58-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-60-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-62-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-64-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-66-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-68-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-70-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4288-141-0x0000000004A80000-0x0000000004A81000-memory.dmp

Filesize
4KB

Download
memory/4288-142-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/4288-143-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/4288-6-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/4288-157-0x0000000074600000-0x0000000074BB1000-memory.dmp

Filesize
5.7MB

Download
memory/4288-5-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/4288-2-0x0000000074600000-0x0000000074BB1000-memory.dmp

Filesize
5.7MB

Download
memory/4288-44-0x0000000004C70000-0x0000000004CEF000-memory.dmp

Filesize
508KB

Download
memory/4308-173-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download