darkcomet | 3ab783b17d6fdd4f8a53053c46662b55c2625c41ff6fa40fcb06b5f90d15ffb1

General

Target

9743485fb879f786a975418b01003d39.exe
Size

456KB
MD5

9743485fb879f786a975418b01003d39
SHA1

b3a41b2c1f82437f5bef0109fa4e884b03ade295
SHA256

3ab783b17d6fdd4f8a53053c46662b55c2625c41ff6fa40fcb06b5f90d15ffb1
SHA512

9a0fe2fbbeb352a8718b097e8b680f5e5f751cd4027190629d99c8da3df3f44b0864e8739a35a613e5f609aa943fed569e45332f7c67503011e2124c5cd34234
SSDEEP

12288:/aPSx9BQ26xD6CPqbohjayHxtgFVdNBHqFa6G:iPSx7Qx5vPJZRtgFV1Z6

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

lolol.no-ip.biz:1604

Mutex

DC_MUTEX-J4N2A18

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
QJcHkMMH5Zvt
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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

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

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2164	attrib.exe

Executes dropped EXE 2 IoCs

pid	Process
2792	cvtres.exe
2808	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
832	9743485fb879f786a975418b01003d39.exe
2792	cvtres.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	cvtres.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 832 set thread context of 2792	832	9743485fb879f786a975418b01003d39.exe	28

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
832	9743485fb879f786a975418b01003d39.exe
832	9743485fb879f786a975418b01003d39.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2792	cvtres.exe
Token: SeSecurityPrivilege	2792	cvtres.exe
Token: SeTakeOwnershipPrivilege	2792	cvtres.exe
Token: SeLoadDriverPrivilege	2792	cvtres.exe
Token: SeSystemProfilePrivilege	2792	cvtres.exe
Token: SeSystemtimePrivilege	2792	cvtres.exe
Token: SeProfSingleProcessPrivilege	2792	cvtres.exe
Token: SeIncBasePriorityPrivilege	2792	cvtres.exe
Token: SeCreatePagefilePrivilege	2792	cvtres.exe
Token: SeBackupPrivilege	2792	cvtres.exe
Token: SeRestorePrivilege	2792	cvtres.exe
Token: SeShutdownPrivilege	2792	cvtres.exe
Token: SeDebugPrivilege	2792	cvtres.exe
Token: SeSystemEnvironmentPrivilege	2792	cvtres.exe
Token: SeChangeNotifyPrivilege	2792	cvtres.exe
Token: SeRemoteShutdownPrivilege	2792	cvtres.exe
Token: SeUndockPrivilege	2792	cvtres.exe
Token: SeDebugPrivilege	832	9743485fb879f786a975418b01003d39.exe
Token: SeManageVolumePrivilege	2792	cvtres.exe
Token: SeImpersonatePrivilege	2792	cvtres.exe
Token: SeCreateGlobalPrivilege	2792	cvtres.exe
Token: 33	2792	cvtres.exe
Token: 34	2792	cvtres.exe
Token: 35	2792	cvtres.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 832 wrote to memory of 2792	832	9743485fb879f786a975418b01003d39.exe	28
PID 2792 wrote to memory of 3028	2792	cvtres.exe	29
PID 2792 wrote to memory of 3028	2792	cvtres.exe	29
PID 2792 wrote to memory of 3028	2792	cvtres.exe	29
PID 2792 wrote to memory of 3028	2792	cvtres.exe	29
PID 3028 wrote to memory of 2164	3028	cmd.exe	31
PID 3028 wrote to memory of 2164	3028	cmd.exe	31
PID 3028 wrote to memory of 2164	3028	cmd.exe	31
PID 3028 wrote to memory of 2164	3028	cmd.exe	31
PID 2792 wrote to memory of 2808	2792	cvtres.exe	32
PID 2792 wrote to memory of 2808	2792	cvtres.exe	32
PID 2792 wrote to memory of 2808	2792	cvtres.exe	32
PID 2792 wrote to memory of 2808	2792	cvtres.exe	32

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2164	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9743485fb879f786a975418b01003d39.exe
"C:\Users\Admin\AppData\Local\Temp\9743485fb879f786a975418b01003d39.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:832
- C:\Users\Admin\AppData\Local\Temp\cvtres.exe
  C:\Users\Admin\AppData\Local\Temp\\cvtres.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\cvtres.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3028
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\cvtres.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:2164
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\cvtres.exe

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/832-0-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/832-1-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/832-2-0x0000000000480000-0x00000000004C0000-memory.dmp

Filesize
256KB

Download
memory/832-28-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-9-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-24-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2792-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2792-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads