darkcomet | 9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201

General

Target

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe
Size

408KB
MD5

c171355f55121ff719f5154f26a62a99
SHA1

804d0e75559bd804c199dfa87f5e2c76dfa552a5
SHA256

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201
SHA512

c23081efe058d881480d9f729993c9d40f538bf724b8edcfbc7f7b7abb7595b9fc0b27fbeb413bf340e56320ea08b5e3c0c94a858af3a64658289da41b08cc8f
SSDEEP

12288:kFj5x0oVQYQMhYfDiji+D17iOeklNv/VnhGqa:Aj3Kcji+DZreklNvthJ

Score

10^/10

darkcomet test-sucessful evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Test-Sucessful

C2

spitzfire.no-ip.org:25565

Mutex

DC_MUTEX-NYVYCRM

Attributes

InstallPath
MSDCSC\System32Updater.exe
gencode
fGhl1lsjQLhX
install
true
offline_keylogger
true
persistence
true
reg_key
System32Updaterdll

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:\\Windows\\system32\\MSDCSC\\System32Updater.exe"	vbc.exe

Executes dropped EXE 1 IoCs

Processes:

System32Updater.exe

pid process

1080 System32Updater.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

1204 attrib.exe
1896 attrib.exe
Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

268 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1080	System32Updater.exe

pid	process
1204	attrib.exe
1896	attrib.exe

pid	process
268	vbc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exevbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Product = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe"	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32Updaterdll = "C:\\Windows\\system32\\MSDCSC\\System32Updater.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

Processes:

vbc.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\System32Updater.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\System32Updater.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe

description pid process target process

PID 1320 set thread context of 268 1320 9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe vbc.exe

description	pid	process	target process
PID 1320 set thread context of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe

Drops file in Windows directory 2 IoCs

Processes:

attrib.exeattrib.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	268	vbc.exe
Token: SeSecurityPrivilege	268	vbc.exe
Token: SeTakeOwnershipPrivilege	268	vbc.exe
Token: SeLoadDriverPrivilege	268	vbc.exe
Token: SeSystemProfilePrivilege	268	vbc.exe
Token: SeSystemtimePrivilege	268	vbc.exe
Token: SeProfSingleProcessPrivilege	268	vbc.exe
Token: SeIncBasePriorityPrivilege	268	vbc.exe
Token: SeCreatePagefilePrivilege	268	vbc.exe
Token: SeBackupPrivilege	268	vbc.exe
Token: SeRestorePrivilege	268	vbc.exe
Token: SeShutdownPrivilege	268	vbc.exe
Token: SeDebugPrivilege	268	vbc.exe
Token: SeSystemEnvironmentPrivilege	268	vbc.exe
Token: SeChangeNotifyPrivilege	268	vbc.exe
Token: SeRemoteShutdownPrivilege	268	vbc.exe
Token: SeUndockPrivilege	268	vbc.exe
Token: SeManageVolumePrivilege	268	vbc.exe
Token: SeImpersonatePrivilege	268	vbc.exe
Token: SeCreateGlobalPrivilege	268	vbc.exe
Token: 33	268	vbc.exe
Token: 34	268	vbc.exe
Token: 35	268	vbc.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 1320 wrote to memory of 268	1320	9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe	vbc.exe
PID 268 wrote to memory of 556	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 556	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 556	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 556	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 1164	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 1164	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 1164	268	vbc.exe	cmd.exe
PID 268 wrote to memory of 1164	268	vbc.exe	cmd.exe
PID 556 wrote to memory of 1896	556	cmd.exe	attrib.exe
PID 556 wrote to memory of 1896	556	cmd.exe	attrib.exe
PID 556 wrote to memory of 1896	556	cmd.exe	attrib.exe
PID 556 wrote to memory of 1896	556	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1204	1164	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1204	1164	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1204	1164	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1204	1164	cmd.exe	attrib.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe
PID 268 wrote to memory of 1080	268	vbc.exe	System32Updater.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1204 attrib.exe
1896 attrib.exe

pid	process
1204	attrib.exe
1896	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe
"C:\Users\Admin\AppData\Local\Temp\9d2c41062b7f7c4f9a57bdb5e6f9f968282655bcd5558155d291d39f48159201.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
2⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:268

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:556

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:1896

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:1164

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:1204

C:\Windows\SysWOW64\MSDCSC\System32Updater.exe
"C:\Windows\system32\MSDCSC\System32Updater.exe"
3⤵
- Executes dropped EXE
PID:1080

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\MSDCSC\System32Updater.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Windows\SysWOW64\MSDCSC\System32Updater.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Windows\SysWOW64\MSDCSC\System32Updater.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/268-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/268-57-0x000000000048F888-mapping.dmp

Download
memory/268-56-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/268-61-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/268-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/268-58-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/556-63-0x0000000000000000-mapping.dmp

Download
memory/1080-69-0x0000000000000000-mapping.dmp

Download
memory/1164-64-0x0000000000000000-mapping.dmp

Download
memory/1204-66-0x0000000000000000-mapping.dmp

Download
memory/1320-54-0x0000000074E61000-0x0000000074E63000-memory.dmp

Filesize
8KB

Download
memory/1320-60-0x0000000074520000-0x0000000074ACB000-memory.dmp

Filesize
5.7MB

Download
memory/1320-55-0x0000000074520000-0x0000000074ACB000-memory.dmp

Filesize
5.7MB

Download
memory/1896-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads