e130351ca5c9892c2a1da22da0da6710ee2ebc754e814a5eae49ebe319401dbb

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 22:33

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General

Target

2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe
Size

30KB
MD5

c3ea8370aedc4013726c354056403b17
SHA1

bd5c1e3ec627718ebfcd0543ac27b88b4a911e50
SHA256

e130351ca5c9892c2a1da22da0da6710ee2ebc754e814a5eae49ebe319401dbb
SHA512

64c47f177130b69a7edaec43f2347da12259cea1e1a4dffa23f42eb79112009b586aeb64977d9602c01efea008d3f6ddd52310715e488d4fad520dcf73b8fb5e
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U/as:b/yC4GyNM01GuQMNXum+Zs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-12.dat	CryptoLocker_rule2

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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1164	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 2552 wrote to memory of 1164	2552	2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe	86
PID 2552 wrote to memory of 1164	2552	2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe	86
PID 2552 wrote to memory of 1164	2552	2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_c3ea8370aedc4013726c354056403b17_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1164

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
31KB

MD5
2d16ec5932f01c07f107b50d43015968

SHA1
cc80a71fbe561de571c53ae647ee7d177d07f8b5

SHA256
4dc9a6448b357f08a165db8b24ee0f08da525d01d8779fdcccd0d7608d9f1a74

SHA512
5cb39d02c67a3247fbedc136202e7e7ce385d98fe1ce805ab931d75183d53c9ba3c2ede1a3a58009b565cb6bb3c2102f112ec34fe311ca9a58d66afe81ab321c

Download Submit
memory/1164-19-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2552-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2552-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2552-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download