eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99

Analysis

max time kernel
192s
max time network
209s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 15:35

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General

Target

eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe
Size

27KB
MD5

54aaea649547315b9c4689e0e0134dbb
SHA1

dd9f5def1f589a7aff81e8c47e493d1387e9723d
SHA256

eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99
SHA512

982141b9df02548ea26fb4db351b02693a7fbd0fe8a1f32d772812974fc6bd7b9215580c6a66b6b3cf70cce234990d6f8a0bf856e4c4dacfc9b6eb6a96a95caa
SSDEEP

768:7qYFw5YjOjcVY7u+L0mNvjaRziDG/jDQjjmWTe+Hc9kstk:7fDC0cu+L0mNvjaRziDG/jDQjjmW9Hcc

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

winlogon.exe.exe

pid process

3700 winlogon.exe.exe

pid	process
3700	winlogon.exe.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:

eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exewinlogon.exe.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "C:\\Users\\Admin\\AppData\\Roaming\\app\\winlogon.exe.exe"	eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "C:\\Users\\Admin\\AppData\\Roaming\\app\\winlogon.exe.exe"	winlogon.exe.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exewinlogon.exe.exe

description	pid	process
Token: SeDebugPrivilege	1168	eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe
Token: SeDebugPrivilege	3700	winlogon.exe.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe

description	pid	process	target process
PID 1168 wrote to memory of 3700	1168	eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe	winlogon.exe.exe
PID 1168 wrote to memory of 3700	1168	eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe	winlogon.exe.exe

C:\Users\Admin\AppData\Local\Temp\eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe
"C:\Users\Admin\AppData\Local\Temp\eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1168

C:\Users\Admin\AppData\Roaming\app\winlogon.exe.exe
"C:\Users\Admin\AppData\Roaming\app\winlogon.exe.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:3700

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\app\winlogon.exe.exe
Filesize
27KB

MD5
54aaea649547315b9c4689e0e0134dbb

SHA1
dd9f5def1f589a7aff81e8c47e493d1387e9723d

SHA256
eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99

SHA512
982141b9df02548ea26fb4db351b02693a7fbd0fe8a1f32d772812974fc6bd7b9215580c6a66b6b3cf70cce234990d6f8a0bf856e4c4dacfc9b6eb6a96a95caa

Download Submit
C:\Users\Admin\AppData\Roaming\app\winlogon.exe.exe
Filesize
27KB

MD5
54aaea649547315b9c4689e0e0134dbb

SHA1
dd9f5def1f589a7aff81e8c47e493d1387e9723d

SHA256
eb2b16421aa9ff4cde923cc63c3f5756967e770e5a2f4a16b719e5ba95ab1f99

SHA512
982141b9df02548ea26fb4db351b02693a7fbd0fe8a1f32d772812974fc6bd7b9215580c6a66b6b3cf70cce234990d6f8a0bf856e4c4dacfc9b6eb6a96a95caa

Download Submit
memory/1168-132-0x0000000000080000-0x000000000008E000-memory.dmp

Filesize
56KB

Download
memory/1168-136-0x00007FFDCF4A0000-0x00007FFDCFF61000-memory.dmp

Filesize
10.8MB

Download
memory/1168-139-0x00007FFDCF4A0000-0x00007FFDCFF61000-memory.dmp

Filesize
10.8MB

Download
memory/3700-133-0x0000000000000000-mapping.dmp

Download
memory/3700-137-0x00007FFDCF4A0000-0x00007FFDCFF61000-memory.dmp

Filesize
10.8MB

Download
memory/3700-138-0x00007FFDCF4A0000-0x00007FFDCFF61000-memory.dmp

Filesize
10.8MB

Download