f98a231b2e8b376424c7a407faf380e16991300e8d383b6170ae3ad1bf22005b

Analysis

max time kernel
146s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 21:29

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General

Target

2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe
Size

55KB
MD5

4bea69608e676ccdd5d750640a5a62df
SHA1

edb95331af4774c1b1331ba6bd7992b8a8c2b750
SHA256

f98a231b2e8b376424c7a407faf380e16991300e8d383b6170ae3ad1bf22005b
SHA512

d1740a30453b6c12bdf489e2aba0bdee957232552b0eb803b9dee49792d0e2010a413b2933e2c9d230f1baa248721b75a4030940d7d2f98ffbe50b06c7be14bd
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/Cd9z3F:79mqyNhQMOtEvwDpjBPY7xv3g8SZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1896-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00060000000231e3-13.dat	CryptoLocker_rule2
behavioral2/memory/2532-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1896-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1896-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00060000000231e3-13.dat	CryptoLocker_set1
behavioral2/memory/2532-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1896-19-0x0000000000500000-0x000000000050F000-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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2532	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 1896 wrote to memory of 2532	1896	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	87
PID 1896 wrote to memory of 2532	1896	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	87
PID 1896 wrote to memory of 2532	1896	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2532

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
55KB

MD5
944eb87f041dbb7654452cfb417c13bc

SHA1
3d6c3c7b8cb455270587d89e71c1546d8c18267a

SHA256
0a279ed97c4633deb95abf68a44ec49851f86368166ef870c23845b56c9c7d99

SHA512
de838510edfdef9840f0c8e9188cf1d89b1bf7d91418bdebc01b58bc524cd0d22f1ba2efda99729141b92eb4f3c42227829cf6a35e7934bf64bb9f4bf90a36f8

Download Submit
memory/1896-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1896-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1896-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1896-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1896-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2532-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2532-20-0x0000000000870000-0x0000000000876000-memory.dmp

Filesize
24KB

Download
memory/2532-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download