darkcomet | c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5

General

Target

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
Size

1.1MB
MD5

87f31938ba32ffe17ff1bbe96e076421
SHA1

97487d29f1cf63559d87d31fc03c20b2b4e4a911
SHA256

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5
SHA512

8b23fd6549f998142f7a64e260736ae6293b84451ad73a80da3597ec482feccf27bebe2be32f2c89b711244a9f370d640114cae7d3d2104153205703006fffcf
SSDEEP

12288:pJIE4VW2o/LW0NHX68XU9sUX9T8+3M2UBvSwo9nKeK3wzuM/5Tdi77X9Z4YuL4:pSy/S0NPK1CWMTxkKeKAbdEX9Z4YuL4

Score

10^/10

darkcomet love evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Love

C2

pet105.no-ip.biz:100

Mutex

DC_MUTEX-TNT8SFG

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
JJbwi9MArQ9S
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

T1004

Modify Registry

T1112

Processes:

vbc.exe

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

Executes dropped EXE 2 IoCs

Processes:

vbc.exemsdcsc.exe

pid process

2000 vbc.exe
748 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1552 attrib.exe
1540 attrib.exe
Loads dropped DLL 2 IoCs

Processes:

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exevbc.exe

pid process

936 c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
2000 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
2000	vbc.exe
748	msdcsc.exe

pid	process
1552	attrib.exe
1540	attrib.exe

pid	process
936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
2000	vbc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exec1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdate.exe"	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe

description	ioc	process
File created	C:\autorun.inf	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
File opened for modification	C:\autorun.inf	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe

description pid process target process

PID 936 set thread context of 2000 936 c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 936 set thread context of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2000	vbc.exe
Token: SeSecurityPrivilege	2000	vbc.exe
Token: SeTakeOwnershipPrivilege	2000	vbc.exe
Token: SeLoadDriverPrivilege	2000	vbc.exe
Token: SeSystemProfilePrivilege	2000	vbc.exe
Token: SeSystemtimePrivilege	2000	vbc.exe
Token: SeProfSingleProcessPrivilege	2000	vbc.exe
Token: SeIncBasePriorityPrivilege	2000	vbc.exe
Token: SeCreatePagefilePrivilege	2000	vbc.exe
Token: SeBackupPrivilege	2000	vbc.exe
Token: SeRestorePrivilege	2000	vbc.exe
Token: SeShutdownPrivilege	2000	vbc.exe
Token: SeDebugPrivilege	2000	vbc.exe
Token: SeSystemEnvironmentPrivilege	2000	vbc.exe
Token: SeChangeNotifyPrivilege	2000	vbc.exe
Token: SeRemoteShutdownPrivilege	2000	vbc.exe
Token: SeUndockPrivilege	2000	vbc.exe
Token: SeManageVolumePrivilege	2000	vbc.exe
Token: SeImpersonatePrivilege	2000	vbc.exe
Token: SeCreateGlobalPrivilege	2000	vbc.exe
Token: 33	2000	vbc.exe
Token: 34	2000	vbc.exe
Token: 35	2000	vbc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid process

1108 DllHost.exe

pid	process
1108	DllHost.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 936 wrote to memory of 2000	936	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 2000 wrote to memory of 1508	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1508	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1508	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1508	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1484	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1484	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1484	2000	vbc.exe	cmd.exe
PID 2000 wrote to memory of 1484	2000	vbc.exe	cmd.exe
PID 1508 wrote to memory of 1552	1508	cmd.exe	attrib.exe
PID 1508 wrote to memory of 1552	1508	cmd.exe	attrib.exe
PID 1508 wrote to memory of 1552	1508	cmd.exe	attrib.exe
PID 1508 wrote to memory of 1552	1508	cmd.exe	attrib.exe
PID 1484 wrote to memory of 1540	1484	cmd.exe	attrib.exe
PID 1484 wrote to memory of 1540	1484	cmd.exe	attrib.exe
PID 1484 wrote to memory of 1540	1484	cmd.exe	attrib.exe
PID 1484 wrote to memory of 1540	1484	cmd.exe	attrib.exe
PID 2000 wrote to memory of 748	2000	vbc.exe	msdcsc.exe
PID 2000 wrote to memory of 748	2000	vbc.exe	msdcsc.exe
PID 2000 wrote to memory of 748	2000	vbc.exe	msdcsc.exe
PID 2000 wrote to memory of 748	2000	vbc.exe	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1552 attrib.exe
1540 attrib.exe

pid	process
1552	attrib.exe
1540	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
"C:\Users\Admin\AppData\Local\Temp\c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:936
- C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\\plugtemp\vbc.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:2000
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1508
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:1552
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1484
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:1540
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    PID:748

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1108

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

1

T1091

Execution

Scripting

1

T1064

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Scripting

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Kép0423.jpg

Filesize
52KB

MD5
d5c6f3f52b18415003b73c2cd1f19834

SHA1
4496e69730f13826ae2772269120d46c45a2f152

SHA256
86f76fea42393fc3cde5283c3d129208a604647b6b806e94dfb54577827022e4

SHA512
07adb088b2dc8ac23f44df5ceb706cd1477eff5f7f4f3d37709beaf5fd8e8149d772ede75bf1a83c2a4e35c2536cf82b614e9b2bfee72d9e8c787183a01bf285

Download Submit
C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/748-84-0x0000000000000000-mapping.dmp

Download
memory/936-54-0x0000000076941000-0x0000000076943000-memory.dmp

Filesize
8KB

Download
memory/936-75-0x0000000074A90000-0x000000007503B000-memory.dmp

Filesize
5.7MB

Download
memory/936-55-0x0000000074A90000-0x000000007503B000-memory.dmp

Filesize
5.7MB

Download
memory/1484-80-0x0000000000000000-mapping.dmp

Download
memory/1508-79-0x0000000000000000-mapping.dmp

Download
memory/1540-82-0x0000000000000000-mapping.dmp

Download
memory/1552-81-0x0000000000000000-mapping.dmp

Download
memory/2000-64-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-77-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-72-0x000000000048F888-mapping.dmp

Download
memory/2000-71-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-85-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-67-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-66-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-62-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-60-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-58-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2000-57-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads