b894dc159c4fcb014938afabf30ac0f7e47f9933462575b1c923becc8576a3d2

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 05:39

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General

Target

2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe
Size

45KB
MD5

9bc44da5bead76c1214f28b95bb2bbaa
SHA1

f13f6282c29fd9d0f3b80ae415460c6803452247
SHA256

b894dc159c4fcb014938afabf30ac0f7e47f9933462575b1c923becc8576a3d2
SHA512

5f3111d9a199b2e851f26da2179d9289445a9d136847160dd3b4b70a23a897fbc276ec077524da67bc8f03590fea199cc101ac4b170ec3e06e5676fccebd1fcb
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPP:P6QFElP6k+MRQMOtEvwDpjBQpVXK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3444-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000231a5-13.dat	CryptoLocker_rule2
behavioral2/memory/3444-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4384-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3444-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a0000000231a5-13.dat	CryptoLocker_set1
behavioral2/memory/3444-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4384-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4384	asih.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 3444 wrote to memory of 4384	3444	2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe	87
PID 3444 wrote to memory of 4384	3444	2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe	87
PID 3444 wrote to memory of 4384	3444	2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_9bc44da5bead76c1214f28b95bb2bbaa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4384

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\asih.exe

Filesize
45KB

MD5
68aec0d13f65bf4d5b1a9617399261c5

SHA1
d0c59f44b4576aa8b41f378d18d353bc70285549

SHA256
05ca4ecda95be060484bfadfa998f3c93c102a6d81aff21a181deef320c3c23a

SHA512
185696c7825a81e53a0ec4060f01ad6abf7cc8fe139dc6d8112132536bb3997601a7d0da72230691beb39f1dc9a33ee1bfb7b87002cedede12fbf652130d1a4f

Download Submit
memory/3444-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3444-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3444-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3444-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3444-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4384-19-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4384-21-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4384-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download