darkcomet | 28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5

General

Target

28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe
Size

900KB
MD5

dc9d7b6a5110abb328bf595d056ce40d
SHA1

efab84b08c63cfe9fb703462a24a9961daa05b08
SHA256

28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5
SHA512

053179b603c513c7be82a355c9b7f0b7bf5edf4ccf083f533d8bf7a9da19dfe558c7ff08d3f7d61c4db28a2f2d72a1af5ce40cb580662ce1440bf97e35f7a16f
SSDEEP

12288:k0l9Cga3LAdaU+zV44yzQ9Jf/opEpZI5yRXyoQZDhQruxXV/9rPTzgbLgXy+Vo0K:j4iUCaLRpFX2WuxXVtPTEgC+60K

Score

10^/10

darkcomet summer persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

summer

C2

qsab98.no-ip.biz:1604

Mutex

DC_MUTEX-6G9L12L

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
6QgnJweVD4dH
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 1 IoCs

Processes:

msdcsc.exe

pid process

1360 msdcsc.exe
Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

1280 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1360	msdcsc.exe

pid	process
1280	vbc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe

description	pid	process	target process
PID 1616 set thread context of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.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

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1280	vbc.exe
Token: SeSecurityPrivilege	1280	vbc.exe
Token: SeTakeOwnershipPrivilege	1280	vbc.exe
Token: SeLoadDriverPrivilege	1280	vbc.exe
Token: SeSystemProfilePrivilege	1280	vbc.exe
Token: SeSystemtimePrivilege	1280	vbc.exe
Token: SeProfSingleProcessPrivilege	1280	vbc.exe
Token: SeIncBasePriorityPrivilege	1280	vbc.exe
Token: SeCreatePagefilePrivilege	1280	vbc.exe
Token: SeBackupPrivilege	1280	vbc.exe
Token: SeRestorePrivilege	1280	vbc.exe
Token: SeShutdownPrivilege	1280	vbc.exe
Token: SeDebugPrivilege	1280	vbc.exe
Token: SeSystemEnvironmentPrivilege	1280	vbc.exe
Token: SeChangeNotifyPrivilege	1280	vbc.exe
Token: SeRemoteShutdownPrivilege	1280	vbc.exe
Token: SeUndockPrivilege	1280	vbc.exe
Token: SeManageVolumePrivilege	1280	vbc.exe
Token: SeImpersonatePrivilege	1280	vbc.exe
Token: SeCreateGlobalPrivilege	1280	vbc.exe
Token: 33	1280	vbc.exe
Token: 34	1280	vbc.exe
Token: 35	1280	vbc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.execmd.exevbc.exe

description	pid	process	target process
PID 1616 wrote to memory of 2040	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	cmd.exe
PID 1616 wrote to memory of 2040	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	cmd.exe
PID 1616 wrote to memory of 2040	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	cmd.exe
PID 1616 wrote to memory of 2040	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	cmd.exe
PID 2040 wrote to memory of 1320	2040	cmd.exe	choice.exe
PID 2040 wrote to memory of 1320	2040	cmd.exe	choice.exe
PID 2040 wrote to memory of 1320	2040	cmd.exe	choice.exe
PID 2040 wrote to memory of 1320	2040	cmd.exe	choice.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1616 wrote to memory of 1280	1616	28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe	vbc.exe
PID 1280 wrote to memory of 1360	1280	vbc.exe	msdcsc.exe
PID 1280 wrote to memory of 1360	1280	vbc.exe	msdcsc.exe
PID 1280 wrote to memory of 1360	1280	vbc.exe	msdcsc.exe
PID 1280 wrote to memory of 1360	1280	vbc.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe
"C:\Users\Admin\AppData\Local\Temp\28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1616

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del C:\Users\Admin\AppData\Local\Temp\28711e96e760a3e740d1bfa3304d86504970fbf8b2184b675774ab3a2148a2f5.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:2040

C:\Windows\SysWOW64\choice.exe
choice /C Y /N /D Y /T 3
3⤵
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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1280

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:1360

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

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\Documents\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/1280-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-77-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-67-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-68-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-73-0x000000000048F888-mapping.dmp

Download
memory/1280-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1280-78-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1320-57-0x0000000000000000-mapping.dmp

Download
memory/1360-80-0x0000000000000000-mapping.dmp

Download
memory/1616-75-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1616-54-0x0000000075781000-0x0000000075783000-memory.dmp

Filesize
8KB

Download
memory/1616-55-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2040-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads