af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9

General

Target

af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe
Size

100KB
MD5

8ca303c4eb9cfbcd3b93f583511abfdf
SHA1

33fe4b8e965724143302b499934f1b5379b615a5
SHA256

af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9
SHA512

c5cb024a8e52eeb99b554f798b683fb1603ca5fe09470c671a817c544dcbc443ef6d88d588804e11a961ab25c8453a34ddaeb335892252f2ed4abf79b354c30e
SSDEEP

1536:9QxqcQu0yvmgEUs1rARbX/CJ+zsxm90BUNvE6V01Deo/k7:y/0gEUcr6bvvzsKp66oc7

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

5er9B5A.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\twext.exe,"	5er9B5A.exe

Executes dropped EXE 2 IoCs

Processes:

5er9B5A.exe5er9B5A.exe

pid process

4724 5er9B5A.exe
2192 5er9B5A.exe

pid	process
4724	5er9B5A.exe
2192	5er9B5A.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:

af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe

Drops file in System32 directory 2 IoCs

Processes:

5er9B5A.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\twext.exe 5er9B5A.exe
File created C:\Windows\SysWOW64\twext.exe 5er9B5A.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

5er9B5A.exe

description pid process target process

PID 4724 set thread context of 2192 4724 5er9B5A.exe 5er9B5A.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 4 IoCs

Processes:

5er9B5A.exe

pid process

2192 5er9B5A.exe
2192 5er9B5A.exe
2192 5er9B5A.exe
2192 5er9B5A.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

5er9B5A.exe

description pid process

Token: SeDebugPrivilege 2192 5er9B5A.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

5er9B5A.exe

pid process

4724 5er9B5A.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\twext.exe	5er9B5A.exe
File created	C:\Windows\SysWOW64\twext.exe	5er9B5A.exe

description	pid	process	target process
PID 4724 set thread context of 2192	4724	5er9B5A.exe	5er9B5A.exe

pid	process
2192	5er9B5A.exe
2192	5er9B5A.exe
2192	5er9B5A.exe
2192	5er9B5A.exe

description	pid	process
Token: SeDebugPrivilege	2192	5er9B5A.exe

pid	process
4724	5er9B5A.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe5er9B5A.exe5er9B5A.exe

description	pid	process	target process
PID 4816 wrote to memory of 4724	4816	af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe	5er9B5A.exe
PID 4816 wrote to memory of 4724	4816	af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe	5er9B5A.exe
PID 4816 wrote to memory of 4724	4816	af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 4724 wrote to memory of 2192	4724	5er9B5A.exe	5er9B5A.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe
PID 2192 wrote to memory of 632	2192	5er9B5A.exe	winlogon.exe

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:632

C:\Users\Admin\AppData\Local\Temp\af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe
"C:\Users\Admin\AppData\Local\Temp\af9b9586beab6e4bd73ddc22da4e7619561b3a9d452a1e9ba498784ea32e7eb9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816

C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe
"C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4724

C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe
"C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe"
3⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2192

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe

Filesize
74KB

MD5
0297a68fc6f338ad45d7eaaa8bdb6886

SHA1
e068b521fe13f8cda438d8eec25daee194b88953

SHA256
26fe9606b7ec84a0e0448ed34f008c65c6be01607ffec4c3d76871a695af7956

SHA512
7980aa95887bad3925a48c40e9735799f6c628cb3ea0615ad5b34900a23cf6d94ca26b5ca10cc5b2239744a69a082276edeb632877c41d862cd06633d2e6107b

Download Submit
C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe

Filesize
74KB

MD5
0297a68fc6f338ad45d7eaaa8bdb6886

SHA1
e068b521fe13f8cda438d8eec25daee194b88953

SHA256
26fe9606b7ec84a0e0448ed34f008c65c6be01607ffec4c3d76871a695af7956

SHA512
7980aa95887bad3925a48c40e9735799f6c628cb3ea0615ad5b34900a23cf6d94ca26b5ca10cc5b2239744a69a082276edeb632877c41d862cd06633d2e6107b

Download Submit
C:\Users\Admin\AppData\Local\Temp\5er9B5A.exe

Filesize
74KB

MD5
0297a68fc6f338ad45d7eaaa8bdb6886

SHA1
e068b521fe13f8cda438d8eec25daee194b88953

SHA256
26fe9606b7ec84a0e0448ed34f008c65c6be01607ffec4c3d76871a695af7956

SHA512
7980aa95887bad3925a48c40e9735799f6c628cb3ea0615ad5b34900a23cf6d94ca26b5ca10cc5b2239744a69a082276edeb632877c41d862cd06633d2e6107b

Download Submit
memory/632-198-0x000000000CD90000-0x000000000CDB6000-memory.dmp

Filesize
152KB

Download
memory/632-203-0x000000000CDC0000-0x000000000CDE6000-memory.dmp

Filesize
152KB

Download
memory/632-243-0x000000000CF40000-0x000000000CF66000-memory.dmp

Filesize
152KB

Download
memory/632-238-0x000000000CF10000-0x000000000CF36000-memory.dmp

Filesize
152KB

Download
memory/632-233-0x000000000CEE0000-0x000000000CF06000-memory.dmp

Filesize
152KB

Download
memory/632-228-0x000000000CEB0000-0x000000000CED6000-memory.dmp

Filesize
152KB

Download
memory/632-223-0x000000000CE80000-0x000000000CEA6000-memory.dmp

Filesize
152KB

Download
memory/632-218-0x000000000CE50000-0x000000000CE76000-memory.dmp

Filesize
152KB

Download
memory/632-213-0x000000000CE20000-0x000000000CE46000-memory.dmp

Filesize
152KB

Download
memory/632-208-0x000000000CDF0000-0x000000000CE16000-memory.dmp

Filesize
152KB

Download
memory/632-158-0x000000000CC10000-0x000000000CC36000-memory.dmp

Filesize
152KB

Download
memory/632-163-0x000000000CC40000-0x000000000CC66000-memory.dmp

Filesize
152KB

Download
memory/632-168-0x000000000CC70000-0x000000000CC96000-memory.dmp

Filesize
152KB

Download
memory/632-173-0x000000000CCA0000-0x000000000CCC6000-memory.dmp

Filesize
152KB

Download
memory/632-178-0x000000000CCD0000-0x000000000CCF6000-memory.dmp

Filesize
152KB

Download
memory/632-183-0x000000000CD00000-0x000000000CD26000-memory.dmp

Filesize
152KB

Download
memory/632-188-0x000000000CD30000-0x000000000CD56000-memory.dmp

Filesize
152KB

Download
memory/632-193-0x000000000CD60000-0x000000000CD86000-memory.dmp

Filesize
152KB

Download
memory/2192-138-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2192-148-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2192-147-0x0000000000410000-0x0000000000412000-memory.dmp

Filesize
8KB

Download
memory/2192-145-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2192-137-0x0000000000000000-mapping.dmp

Download
memory/2192-144-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2192-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2192-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2192-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4724-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads