dcbbae5a1c61dbbbb7dcd6dc5dd1eb1169f5329958d38b58c3fd9384081c9b78

General

Target

stage2.exe
Size

209KB
MD5

14c8482f302b5e81e3fa1b18a509289d
SHA1

16525cb2fd86dce842107eb1ba6174b23f188537
SHA256

dcbbae5a1c61dbbbb7dcd6dc5dd1eb1169f5329958d38b58c3fd9384081c9b78
SHA512

fdaaac4ee73db90f69dc43a20f24d8f80a2f659288d28538c6fd1946b8861bb161b41ad3bcd65d16843cd21350e95c606f991a990110e100029b58abce978353

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 2828 created 3024 2828 WerFault.exe stage2.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

stage2.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation stage2.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3572 3024 WerFault.exe stage2.exe

description	pid	process	target process
PID 2828 created 3024	2828	WerFault.exe	stage2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	stage2.exe

pid	pid_target	process	target process
3572	3024	WerFault.exe	stage2.exe

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotification.exeWerFault.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exeWerFault.exe

pid process

228 powershell.exe
228 powershell.exe
3896 powershell.exe
3896 powershell.exe
3572 WerFault.exe
3572 WerFault.exe

pid	process
228	powershell.exe
228	powershell.exe
3896	powershell.exe
3896	powershell.exe
3572	WerFault.exe
3572	WerFault.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

powershell.exeMusNotification.exepowershell.exestage2.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	228	powershell.exe
Token: SeShutdownPrivilege	2944	MusNotification.exe
Token: SeCreatePagefilePrivilege	2944	MusNotification.exe
Token: SeDebugPrivilege	3896	powershell.exe
Token: SeDebugPrivilege	3024	stage2.exe
Token: SeRestorePrivilege	3572	WerFault.exe
Token: SeBackupPrivilege	3572	WerFault.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

stage2.exeWerFault.exe

description	pid	process	target process
PID 3024 wrote to memory of 228	3024	stage2.exe	powershell.exe
PID 3024 wrote to memory of 228	3024	stage2.exe	powershell.exe
PID 3024 wrote to memory of 228	3024	stage2.exe	powershell.exe
PID 3024 wrote to memory of 3896	3024	stage2.exe	powershell.exe
PID 3024 wrote to memory of 3896	3024	stage2.exe	powershell.exe
PID 3024 wrote to memory of 3896	3024	stage2.exe	powershell.exe
PID 2828 wrote to memory of 3024	2828	WerFault.exe	stage2.exe
PID 2828 wrote to memory of 3024	2828	WerFault.exe	stage2.exe

C:\Users\Admin\AppData\Local\Temp\stage2.exe
"C:\Users\Admin\AppData\Local\Temp\stage2.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3024

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:228

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3024 -s 2024
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3572

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:2944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 3024 -ip 3024
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2828

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
MD5
4280e36a29fa31c01e4d8b2ba726a0d8

SHA1
c485c2c9ce0a99747b18d899b71dfa9a64dabe32

SHA256
e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

SHA512
494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
MD5
8c49aa584665d82d54bbce04490352ce

SHA1
298e08258daa2429641fb1f5dbe78cc5edfba3bb

SHA256
9f4cca0b32f595a1a1b2cdfdacd86e9705f3075699ab4a72cc12e1fab468d6c1

SHA512
73be18dadc852ec4c9ba57824868c676f481062e7213180434502888d40bae78d39a554ed39a041d15867e144c3e76667c47c41e75657aafeda16d86060ff5e8

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memory/228-139-0x0000000006E42000-0x0000000006E43000-memory.dmp

Filesize
4KB

Download
memory/228-147-0x0000000004800000-0x0000000004801000-memory.dmp

Filesize
4KB

Download
memory/228-135-0x0000000004800000-0x0000000004801000-memory.dmp

Filesize
4KB

Download
memory/228-134-0x0000000004800000-0x0000000004801000-memory.dmp

Filesize
4KB

Download
memory/228-133-0x0000000000000000-mapping.dmp

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memory/228-137-0x0000000004CF0000-0x0000000004D26000-memory.dmp

Filesize
216KB

Download
memory/228-138-0x0000000007480000-0x0000000007AA8000-memory.dmp

Filesize
6.2MB

Download
memory/228-141-0x0000000007C20000-0x0000000007C86000-memory.dmp

Filesize
408KB

Download
memory/228-140-0x0000000007220000-0x0000000007242000-memory.dmp

Filesize
136KB

Download
memory/228-136-0x0000000006E40000-0x0000000006E41000-memory.dmp

Filesize
4KB

Download
memory/228-142-0x0000000007C90000-0x0000000007CF6000-memory.dmp

Filesize
408KB

Download
memory/228-143-0x00000000082C0000-0x00000000082DE000-memory.dmp

Filesize
120KB

Download
memory/228-144-0x0000000009920000-0x0000000009F9A000-memory.dmp

Filesize
6.5MB

Download
memory/228-145-0x00000000087E0000-0x00000000087FA000-memory.dmp

Filesize
104KB

Download
memory/228-146-0x0000000006E45000-0x0000000006E47000-memory.dmp

Filesize
8KB

Download
memory/3024-131-0x0000000000C50000-0x0000000000C80000-memory.dmp

Filesize
192KB

Download
memory/3024-165-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

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memory/3024-130-0x0000000000C50000-0x0000000000C80000-memory.dmp

Filesize
192KB

Download
memory/3024-132-0x0000000005C20000-0x00000000061C4000-memory.dmp

Filesize
5.6MB

Download
memory/3896-156-0x0000000007840000-0x00000000078A6000-memory.dmp

Filesize
408KB

Download
memory/3896-159-0x0000000006880000-0x0000000006881000-memory.dmp

Filesize
4KB

Download
memory/3896-153-0x0000000006EC0000-0x00000000074E8000-memory.dmp

Filesize
6.2MB

Download
memory/3896-154-0x0000000007530000-0x0000000007552000-memory.dmp

Filesize
136KB

Download
memory/3896-155-0x0000000007700000-0x0000000007766000-memory.dmp

Filesize
408KB

Download
memory/3896-150-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

Download
memory/3896-148-0x0000000000000000-mapping.dmp

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memory/3896-152-0x0000000006740000-0x0000000006776000-memory.dmp

Filesize
216KB

Download
memory/3896-158-0x0000000007D50000-0x0000000007D6E000-memory.dmp

Filesize
120KB

Download
memory/3896-160-0x0000000006882000-0x0000000006883000-memory.dmp

Filesize
4KB

Download
memory/3896-161-0x0000000006885000-0x0000000006887000-memory.dmp

Filesize
8KB

Download
memory/3896-162-0x0000000009680000-0x0000000009CFA000-memory.dmp

Filesize
6.5MB

Download
memory/3896-163-0x00000000081E0000-0x00000000081FA000-memory.dmp

Filesize
104KB

Download
memory/3896-164-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

Download
memory/3896-151-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads