aeafca60133e17f0b91fa0f73a697d7db258b43b95813a298492907bb92685a9

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 01:47

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General

Target

2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe
Size

54KB
MD5

af7872ebc42d25b47ea08efe9c42a0e2
SHA1

fc1452fb1e00548eca795051e05486492be3b20f
SHA256

aeafca60133e17f0b91fa0f73a697d7db258b43b95813a298492907bb92685a9
SHA512

54c7e4805d0755c208f371aa31459b77c976ae36c06da56e4bbc3561ab84f67405e26439edd25ceac55b4aab2190ea1cf70110ccc8aaf5c04aedacc7dc393ae3
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0wt:X6a+BOtEvwDpjBOh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ea-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ea-12.dat	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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2300	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 1212 wrote to memory of 2300	1212	2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe	84
PID 1212 wrote to memory of 2300	1212	2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe	84
PID 1212 wrote to memory of 2300	1212	2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_af7872ebc42d25b47ea08efe9c42a0e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2300

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
54KB

MD5
e9c476cd82619d371de368076450f561

SHA1
795504d84a183d29a5b01a8e46f464cbc577c44b

SHA256
fd13c65011f97a44a68accb7520cdcc33984e01135ee0d0b586505d90e5de746

SHA512
a0e2ec82eec4eb716fa06d11919324847d1879f767fa44658f2d8ed72bb2d44f43a60cab27f59bc55c9fced60ae0f568ad34677551aafb892a2e241292ea3369

Download Submit
memory/1212-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1212-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1212-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2300-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2300-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download