f7e84983d536c3ea84a5b47d63bd39c0f326b7ddbfb63b20425d1a4c22afb20a

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 00:55

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General

Target

2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe
Size

44KB
MD5

d5847c98aa2767e79db6ffdad04c6872
SHA1

7c639a53208f91ba6990d12dff0c9a0735fd4834
SHA256

f7e84983d536c3ea84a5b47d63bd39c0f326b7ddbfb63b20425d1a4c22afb20a
SHA512

2661216979f07e175b11cd2fc0347c70cb6a03d31e9ba0a4a28461a33bb3b0a2ef3d530436c44ab567a626ca452e22f45042f2827e7ccb9d2bb22c9bf442e702
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvy3hP:79mqyNhQMOtEvwDpjBzckqhP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3096-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022745-13.dat	CryptoLocker_rule2
behavioral2/memory/3096-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3096-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000022745-13.dat	CryptoLocker_set1
behavioral2/memory/3096-17-0x0000000000500000-0x000000000050F000-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2268	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 3096 wrote to memory of 2268	3096	2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe	89
PID 3096 wrote to memory of 2268	3096	2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe	89
PID 3096 wrote to memory of 2268	3096	2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_d5847c98aa2767e79db6ffdad04c6872_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3096
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2268

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
44KB

MD5
33ccdfeea9df843fa5c0a1fb5bc53c74

SHA1
607c48c0ddcdf9e7306e11b1db8f55c285364189

SHA256
a5d4002b0bd1195e7b8796d7ea454ebc925eb8905f104a2f6dcb0cc1bb000e30

SHA512
14aed7cde30d6e291ff23c182c259d0e4bb3cb93afcff8ec6d63fe11f748743f8e79d28e081e6e6588e2e2b00466d7bb5263feb40c732374d3bec3bf2dbdc6dc

Download Submit
memory/2268-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2268-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3096-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3096-1-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3096-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3096-3-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3096-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download