7515891da490d8fb807fa68ea40e27d0fb25a111c17b5a06cafe770f74c51599

General

Target

Catelog.jpg.exe
Size

123KB
MD5

458a2379358ae7cdd5a47059277338ca
SHA1

c3753cfa681d226b772a3ab6bc462a5c29791fa0
SHA256

d954de23f8e04cff445b91436fdaf60b05c18e115c3dda8afce8460d72fb1fa7
SHA512

fe182750f864b963f5ca970013bf5003dd108c7e7d69c981d9b8779b8276727b464fd5a1978dffd68e9e52e809bf7ce23206114d58f6aba3d87d4e8b5d768705
SSDEEP

3072:wJQ8sYDCBvQTYMGWdQUkv2Gc1eGktXENiTRWnTuX8Wr:yERqTfGDHv+DvoTROTu

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

lsass.exe

pid process

1276 lsass.exe
Drops startup file 1 IoCs

Processes:

cvtres.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe cvtres.exe
Loads dropped DLL 2 IoCs

Processes:

Catelog.jpg.execvtres.exe

pid process

1696 Catelog.jpg.exe
1356 cvtres.exe

pid	process
1276	lsass.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe	cvtres.exe

pid	process
1696	Catelog.jpg.exe
1356	cvtres.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\XGdES9N8RW = "C:\\Users\\Admin\\AppData\\Roaming\\dGNIWZiH\\seb2plM.exe.lnk"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Catelog.jpg.exe

description pid process target process

PID 1696 set thread context of 1356 1696 Catelog.jpg.exe cvtres.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Catelog.jpg.exe

pid process

1696 Catelog.jpg.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Catelog.jpg.execvtres.exe

description pid process

Token: SeDebugPrivilege 1696 Catelog.jpg.exe
Token: SeDebugPrivilege 1356 cvtres.exe

description	pid	process	target process
PID 1696 set thread context of 1356	1696	Catelog.jpg.exe	cvtres.exe

pid	process
1696	Catelog.jpg.exe

description	pid	process
Token: SeDebugPrivilege	1696	Catelog.jpg.exe
Token: SeDebugPrivilege	1356	cvtres.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Catelog.jpg.execmd.execvtres.exe

description	pid	process	target process
PID 1696 wrote to memory of 1224	1696	Catelog.jpg.exe	cmd.exe
PID 1696 wrote to memory of 1224	1696	Catelog.jpg.exe	cmd.exe
PID 1696 wrote to memory of 1224	1696	Catelog.jpg.exe	cmd.exe
PID 1696 wrote to memory of 1224	1696	Catelog.jpg.exe	cmd.exe
PID 1224 wrote to memory of 1292	1224	cmd.exe	reg.exe
PID 1224 wrote to memory of 1292	1224	cmd.exe	reg.exe
PID 1224 wrote to memory of 1292	1224	cmd.exe	reg.exe
PID 1224 wrote to memory of 1292	1224	cmd.exe	reg.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1696 wrote to memory of 1356	1696	Catelog.jpg.exe	cvtres.exe
PID 1356 wrote to memory of 1276	1356	cvtres.exe	lsass.exe
PID 1356 wrote to memory of 1276	1356	cvtres.exe	lsass.exe
PID 1356 wrote to memory of 1276	1356	cvtres.exe	lsass.exe
PID 1356 wrote to memory of 1276	1356	cvtres.exe	lsass.exe

C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe
"C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"
2⤵
- Suspicious use of WriteProcessMemory
PID:1224

C:\Windows\SysWOW64\reg.exe
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"
3⤵
- Adds Run key to start application
PID:1292

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"
2⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1356

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe"
3⤵
- Executes dropped EXE
PID:1276

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe
Filesize
123KB

MD5
458a2379358ae7cdd5a47059277338ca

SHA1
c3753cfa681d226b772a3ab6bc462a5c29791fa0

SHA256
d954de23f8e04cff445b91436fdaf60b05c18e115c3dda8afce8460d72fb1fa7

SHA512
fe182750f864b963f5ca970013bf5003dd108c7e7d69c981d9b8779b8276727b464fd5a1978dffd68e9e52e809bf7ce23206114d58f6aba3d87d4e8b5d768705

Download Submit
memory/1224-59-0x0000000000000000-mapping.dmp

Download
memory/1276-70-0x0000000000000000-mapping.dmp

Download
memory/1292-60-0x0000000000000000-mapping.dmp

Download
memory/1356-62-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1356-61-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1356-64-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1356-65-0x0000000000401000-mapping.dmp

Download
memory/1356-72-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1696-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

Filesize
8KB

Download
memory/1696-67-0x0000000074E10000-0x00000000753BB000-memory.dmp

Filesize
5.7MB

Download
memory/1696-68-0x00000000001A6000-0x00000000001B7000-memory.dmp

Filesize
68KB

Download
memory/1696-57-0x0000000074E10000-0x00000000753BB000-memory.dmp

Filesize
5.7MB

Download
memory/1696-56-0x00000000001A6000-0x00000000001B7000-memory.dmp

Filesize
68KB

Download
memory/1696-55-0x0000000074E10000-0x00000000753BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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