Malware Analysis Report

2024-08-06 17:12

Sample ID 240428-d1awaafa82
Target 044626347c403a9fa5370006cd52f2ec_JaffaCakes118
SHA256 0f18011ef2afa539dd7ffbac8465e04d8b851ba3cfb5c131bb87c0e391110363
Tags
upx guest16 darkcomet evasion persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0f18011ef2afa539dd7ffbac8465e04d8b851ba3cfb5c131bb87c0e391110363

Threat Level: Known bad

The file 044626347c403a9fa5370006cd52f2ec_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

upx guest16 darkcomet evasion persistence rat trojan

Darkcomet family

Darkcomet

Modifies WinLogon for persistence

Sets file to hidden

Checks computer location settings

UPX packed file

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Views/modifies file attributes

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Defense Evasion
TA0005
Modify Registry
T1112
Hide Artifacts
T1564
Hidden Files and Directories
T1564.001
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-28 03:28

Signatures

Darkcomet family

darkcomet

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-28 03:28

Reported

2024-04-28 03:30

Platform

win7-20240419-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\×èòû" C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

Sets file to hidden

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\×èòû" C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2288 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2288 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2240 wrote to memory of 2144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2240 wrote to memory of 2144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2240 wrote to memory of 2144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2260 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2260 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2260 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2260 wrote to memory of 2644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe" +s +h

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

Network

N/A

Files

memory/2288-0-0x0000000000400000-0x00000000004B7000-memory.dmp

memory/2288-1-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2288-4-0x0000000000400000-0x00000000004B7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-28 03:28

Reported

2024-04-28 03:30

Platform

win10v2004-20240426-en

Max time kernel

91s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\×èòû" C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

Sets file to hidden

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\×èòû" C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 916 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 916 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 916 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 916 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 916 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 916 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1636 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 1636 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 1636 wrote to memory of 1220 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 872 wrote to memory of 3244 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 872 wrote to memory of 3244 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 872 wrote to memory of 3244 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe" +s +h

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp\044626347c403a9fa5370006cd52f2ec_JaffaCakes118.exe" +s +h

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/916-0-0x0000000000400000-0x00000000004B7000-memory.dmp

memory/916-1-0x0000000000600000-0x0000000000601000-memory.dmp

C:\Users\Admin\AppData\Roaming\×èòû

MD5 044626347c403a9fa5370006cd52f2ec
SHA1 57f68fe970b1367fb38d3bc4e4434ef76c148a31
SHA256 0f18011ef2afa539dd7ffbac8465e04d8b851ba3cfb5c131bb87c0e391110363
SHA512 9b088e9b3bde254c7603b9a3b74f46f1c2162dfd31166ad18b84d3eae3320d50411ce5cb4638628028d4a4a9087dbe383c9c9f0224769f8cb5e9271fcd5a832f

memory/916-28-0x0000000000400000-0x00000000004B7000-memory.dmp