darkcomet | 7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

General

Target

7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe
Size

328KB
MD5

5a6770a663b5125240a78424db7a74f2
SHA1

b3f3615b2e3c7b04fa904ce893644b9de65f9395
SHA256

7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93
SHA512

58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad
SSDEEP

6144:umYnW1JAtWAwM0bWQLM0D0B+Gs4Jc+UO5EBGprbDGwBuUPN:KW1JuWm0bRw+NTO5JRPGwBrV

Score

10^/10

darkcomet backup persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

BackUp

C2

185.17.1.54:9002

Mutex

WindowsBackUpMgr

Attributes

gencode
VzVqX1p6FUzg
install
false
offline_keylogger
true
password
redblood1
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Executes dropped EXE 3 IoCs

Processes:

winlogon.exewinlogon.execsrss.exe

pid process

1384 winlogon.exe
1696 winlogon.exe
1948 csrss.exe

pid	process
1384	winlogon.exe
1696	winlogon.exe
1948	csrss.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1696-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1696-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1696-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1696-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1696-79-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1696-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1696-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winlogon.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\sgbcsvbadfvbdfvasdf\\Tsdfadsvsfsdfs\\winlogon.exe"	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\sgbcsvbadfvbdfvasdf\\Tsdfadsvsfsdfs\\winlogon.exe"	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\sgbcsvbadfvbdfvasdf\\Tsdfadsvsfsdfs\\winlogon.exe"	csrss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\sgbcsvbadfvbdfvasdf\\Tsdfadsvsfsdfs\\winlogon.exe"	winlogon.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

winlogon.exe

description pid process target process

PID 1384 set thread context of 1696 1384 winlogon.exe winlogon.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 1384 set thread context of 1696	1384	winlogon.exe	winlogon.exe

NTFS ADS 4 IoCs

Processes:

cmd.exe7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.execmd.exewinlogon.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe:ZONE.identifier	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe\:ZONE.identifier:$DATA	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe:ZONE.identifier	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\csrss.exe\:ZONE.identifier:$DATA	winlogon.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

csrss.exe

pid	process
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe
1948	csrss.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

winlogon.execsrss.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1696	winlogon.exe
Token: SeSecurityPrivilege	1696	winlogon.exe
Token: SeTakeOwnershipPrivilege	1696	winlogon.exe
Token: SeLoadDriverPrivilege	1696	winlogon.exe
Token: SeSystemProfilePrivilege	1696	winlogon.exe
Token: SeSystemtimePrivilege	1696	winlogon.exe
Token: SeProfSingleProcessPrivilege	1696	winlogon.exe
Token: SeIncBasePriorityPrivilege	1696	winlogon.exe
Token: SeCreatePagefilePrivilege	1696	winlogon.exe
Token: SeBackupPrivilege	1696	winlogon.exe
Token: SeRestorePrivilege	1696	winlogon.exe
Token: SeShutdownPrivilege	1696	winlogon.exe
Token: SeDebugPrivilege	1696	winlogon.exe
Token: SeSystemEnvironmentPrivilege	1696	winlogon.exe
Token: SeChangeNotifyPrivilege	1696	winlogon.exe
Token: SeRemoteShutdownPrivilege	1696	winlogon.exe
Token: SeUndockPrivilege	1696	winlogon.exe
Token: SeManageVolumePrivilege	1696	winlogon.exe
Token: SeImpersonatePrivilege	1696	winlogon.exe
Token: SeCreateGlobalPrivilege	1696	winlogon.exe
Token: 33	1696	winlogon.exe
Token: 34	1696	winlogon.exe
Token: 35	1696	winlogon.exe
Token: SeDebugPrivilege	1948	csrss.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

winlogon.exe

pid process

1696 winlogon.exe

pid	process
1696	winlogon.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exewinlogon.exe

description	pid	process	target process
PID 596 wrote to memory of 520	596	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe	cmd.exe
PID 596 wrote to memory of 520	596	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe	cmd.exe
PID 596 wrote to memory of 520	596	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe	cmd.exe
PID 596 wrote to memory of 1384	596	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe	winlogon.exe
PID 596 wrote to memory of 1384	596	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe	winlogon.exe
PID 596 wrote to memory of 1384	596	7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe	winlogon.exe
PID 1384 wrote to memory of 980	1384	winlogon.exe	cmd.exe
PID 1384 wrote to memory of 980	1384	winlogon.exe	cmd.exe
PID 1384 wrote to memory of 980	1384	winlogon.exe	cmd.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1696	1384	winlogon.exe	winlogon.exe
PID 1384 wrote to memory of 1948	1384	winlogon.exe	csrss.exe
PID 1384 wrote to memory of 1948	1384	winlogon.exe	csrss.exe
PID 1384 wrote to memory of 1948	1384	winlogon.exe	csrss.exe

C:\Users\Admin\AppData\Local\Temp\7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe
"C:\Users\Admin\AppData\Local\Temp\7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:596

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > "C:\Users\Admin\AppData\Local\Temp\7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe":ZONE.identifier & exit
2⤵
- NTFS ADS
PID:520

C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe
"C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1384

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > "C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe":ZONE.identifier & exit
3⤵
- NTFS ADS
PID:980

C:\Users\Admin\AppData\Roaming\winlogon.exe
"C:\Users\Admin\AppData\Roaming\winlogon.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1696

C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\csrss.exe
"C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\csrss.exe" -reg C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe -proc 1696 C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1948

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93.exe
Filesize
328KB

MD5
5a6770a663b5125240a78424db7a74f2

SHA1
b3f3615b2e3c7b04fa904ce893644b9de65f9395

SHA256
7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

SHA512
58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad

Download Submit
C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\csrss.exe
Filesize
328KB

MD5
5a6770a663b5125240a78424db7a74f2

SHA1
b3f3615b2e3c7b04fa904ce893644b9de65f9395

SHA256
7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

SHA512
58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad

Download Submit
C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\csrss.exe
Filesize
328KB

MD5
5a6770a663b5125240a78424db7a74f2

SHA1
b3f3615b2e3c7b04fa904ce893644b9de65f9395

SHA256
7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

SHA512
58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad

Download Submit
C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe
Filesize
328KB

MD5
5a6770a663b5125240a78424db7a74f2

SHA1
b3f3615b2e3c7b04fa904ce893644b9de65f9395

SHA256
7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

SHA512
58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad

Download Submit
C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe
Filesize
328KB

MD5
5a6770a663b5125240a78424db7a74f2

SHA1
b3f3615b2e3c7b04fa904ce893644b9de65f9395

SHA256
7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

SHA512
58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad

Download Submit
C:\Users\Admin\AppData\Roaming\sgbcsvbadfvbdfvasdf\Tsdfadsvsfsdfs\winlogon.exe
Filesize
328KB

MD5
5a6770a663b5125240a78424db7a74f2

SHA1
b3f3615b2e3c7b04fa904ce893644b9de65f9395

SHA256
7487b0bf31ecec6248a41d78cd00d1f4e4b5f6e778b363f0d798fe2e654f1f93

SHA512
58bfc1a02760d14ac63e4a9c8a06430a1a2adca1608fba10d8be59e34db03e51cf8ebbb6b7e016fd932506af7246da501b5ea0a1f6ab4e6aa78b32ad106aa5ad

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/520-57-0x0000000000000000-mapping.dmp

Download
memory/596-55-0x000007FEF2D10000-0x000007FEF3DA6000-memory.dmp

Filesize
16.6MB

Download
memory/596-56-0x000007FEFC311000-0x000007FEFC313000-memory.dmp

Filesize
8KB

Download
memory/596-54-0x000007FEF3FF0000-0x000007FEF4A13000-memory.dmp

Filesize
10.1MB

Download
memory/980-65-0x0000000000000000-mapping.dmp

Download
memory/1384-63-0x000007FEF25B0000-0x000007FEF3646000-memory.dmp

Filesize
16.6MB

Download
memory/1384-62-0x000007FEF3650000-0x000007FEF4073000-memory.dmp

Filesize
10.1MB

Download
memory/1384-59-0x0000000000000000-mapping.dmp

Download
memory/1696-77-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download
memory/1696-74-0x00000000004B5670-mapping.dmp

Download
memory/1696-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-79-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1696-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1948-82-0x0000000000000000-mapping.dmp

Download
memory/1948-85-0x000007FEF3650000-0x000007FEF4073000-memory.dmp

Filesize
10.1MB

Download
memory/1948-86-0x000007FEF25B0000-0x000007FEF3646000-memory.dmp

Filesize
16.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads