darkcomet | 628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0

General

Target

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Size

350KB
MD5

419bea8711945b4185825587a2e5b73d
SHA1

f8f02d52acf2b828148a11c8e34526b08c5433a7
SHA256

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0
SHA512

5c5be665eab48de558005861a15eade944c8eca3738381d3e054a074224dfd50f0b1da5805f0da8691dae1c5578aefb6c9cb8a4af115759205aa41062412c5ff
SSDEEP

6144:YD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZFY05LLTMdW+:Yl8E4w5huat7UovONzbXwS0dMd0QZh9u

Score

10^/10

darkcomet windows persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Windows

C2

darkcomet30.zapto.org:1604

192.168.1.4:1604

Mutex

DC_MUTEX-VYWT48W

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Qmcc37KssvVE
install
true
offline_keylogger
true
persistence
false
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:

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.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"	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1752 msdcsc.exe

pid	process
1752	msdcsc.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1188-55-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral1/memory/1188-60-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/1752-62-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/1752-63-0x0000000000400000-0x00000000004EB000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe

pid	process
1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.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"	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.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 46 IoCs

Processes:

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeSecurityPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeTakeOwnershipPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeLoadDriverPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeSystemProfilePrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeSystemtimePrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeProfSingleProcessPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeIncBasePriorityPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeCreatePagefilePrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeBackupPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeRestorePrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeShutdownPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeDebugPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeSystemEnvironmentPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeChangeNotifyPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeRemoteShutdownPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeUndockPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeManageVolumePrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeImpersonatePrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeCreateGlobalPrivilege	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: 33	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: 34	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: 35	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
Token: SeIncreaseQuotaPrivilege	1752	msdcsc.exe
Token: SeSecurityPrivilege	1752	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1752	msdcsc.exe
Token: SeLoadDriverPrivilege	1752	msdcsc.exe
Token: SeSystemProfilePrivilege	1752	msdcsc.exe
Token: SeSystemtimePrivilege	1752	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1752	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1752	msdcsc.exe
Token: SeCreatePagefilePrivilege	1752	msdcsc.exe
Token: SeBackupPrivilege	1752	msdcsc.exe
Token: SeRestorePrivilege	1752	msdcsc.exe
Token: SeShutdownPrivilege	1752	msdcsc.exe
Token: SeDebugPrivilege	1752	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1752	msdcsc.exe
Token: SeChangeNotifyPrivilege	1752	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1752	msdcsc.exe
Token: SeUndockPrivilege	1752	msdcsc.exe
Token: SeManageVolumePrivilege	1752	msdcsc.exe
Token: SeImpersonatePrivilege	1752	msdcsc.exe
Token: SeCreateGlobalPrivilege	1752	msdcsc.exe
Token: 33	1752	msdcsc.exe
Token: 34	1752	msdcsc.exe
Token: 35	1752	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1752 msdcsc.exe

pid	process
1752	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe

description	pid	process	target process
PID 1188 wrote to memory of 1752	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe	msdcsc.exe
PID 1188 wrote to memory of 1752	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe	msdcsc.exe
PID 1188 wrote to memory of 1752	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe	msdcsc.exe
PID 1188 wrote to memory of 1752	1188	628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe
"C:\Users\Admin\AppData\Local\Temp\628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1188

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

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
350KB

MD5
419bea8711945b4185825587a2e5b73d

SHA1
f8f02d52acf2b828148a11c8e34526b08c5433a7

SHA256
628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0

SHA512
5c5be665eab48de558005861a15eade944c8eca3738381d3e054a074224dfd50f0b1da5805f0da8691dae1c5578aefb6c9cb8a4af115759205aa41062412c5ff

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
350KB

MD5
419bea8711945b4185825587a2e5b73d

SHA1
f8f02d52acf2b828148a11c8e34526b08c5433a7

SHA256
628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0

SHA512
5c5be665eab48de558005861a15eade944c8eca3738381d3e054a074224dfd50f0b1da5805f0da8691dae1c5578aefb6c9cb8a4af115759205aa41062412c5ff

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
350KB

MD5
419bea8711945b4185825587a2e5b73d

SHA1
f8f02d52acf2b828148a11c8e34526b08c5433a7

SHA256
628c23d063f84d1985f9b51a8841ccf9988bc2a31f1b8c6993f255b887ad6ff0

SHA512
5c5be665eab48de558005861a15eade944c8eca3738381d3e054a074224dfd50f0b1da5805f0da8691dae1c5578aefb6c9cb8a4af115759205aa41062412c5ff

Download Submit
memory/1188-54-0x0000000075BE1000-0x0000000075BE3000-memory.dmp

Filesize
8KB

Download
memory/1188-55-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/1188-60-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/1752-58-0x0000000000000000-mapping.dmp

Download
memory/1752-62-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/1752-63-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads