81bb92876afdbb551292028fb7ee5560280d57a1e6e436d1688de3c1d0e6790a

Analysis

max time kernel
152s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 01:28

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General

Target

1df63f6522f3f9dd7db737a0b71be436.exe
Size

34KB
MD5

1df63f6522f3f9dd7db737a0b71be436
SHA1

36839e97bf43240b064444d07c0badf57b52949c
SHA256

81bb92876afdbb551292028fb7ee5560280d57a1e6e436d1688de3c1d0e6790a
SHA512

0974be7377adbca3f777199f0c910228879bd1a43d85793490a9c8ba81a28619249b073b97ae27446dc059ca478351d471292d958dc329cb3ade7617de6635f3
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0X/EI4:b/yC4GyNM01GuQMNXw2PSjH+Pk

Score

7^/10

Malware Config

Signatures

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	1df63f6522f3f9dd7db737a0b71be436.exe

Executes dropped EXE 1 IoCs

pid	Process
4024	retln.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 4024	4432	1df63f6522f3f9dd7db737a0b71be436.exe	83
PID 4432 wrote to memory of 4024	4432	1df63f6522f3f9dd7db737a0b71be436.exe	83
PID 4432 wrote to memory of 4024	4432	1df63f6522f3f9dd7db737a0b71be436.exe	83

C:\Users\Admin\AppData\Local\Temp\1df63f6522f3f9dd7db737a0b71be436.exe
"C:\Users\Admin\AppData\Local\Temp\1df63f6522f3f9dd7db737a0b71be436.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
34KB

MD5
87fc6e852d9f0ec31bddcd7099d017cf

SHA1
a6c6ef3b3f1113e75df758b3c67db41cd1e97ea0

SHA256
2bfd93189979f2124ab37c614570d1e77e9a3adb6aaac7e9b470b12b9aff451b

SHA512
d52b3481e26b8ec108aba9550fd604cbf38588618a602fa61079af3ee38de32c54bff149ed9b76982d580eef5706c799a8fbaf90cd2d87c7c654a28879da8211

Download Submit
memory/4024-17-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4432-0-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4432-1-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4432-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download