f89fc6b52de61e9fea665abf803ccf986937df52212102def45930889cd9ab55

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 04:29

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General

Target

2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe
Size

47KB
MD5

2a8b59d4988e95293e1fec049b7a1261
SHA1

d41a7d95c5cafda8c7a64e54b3cef08c2f1b6a4a
SHA256

f89fc6b52de61e9fea665abf803ccf986937df52212102def45930889cd9ab55
SHA512

c9c0c9e76dc533d10b2036962cde7ce46b837e479ac2503c0d619aaf937b53192ccc94b82fb12e4854bdeaf095d635aee652a10eec35a87188c6b0dd2f33e17d
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkce:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4092-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_rule2
behavioral2/memory/4092-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2720-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4092-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_set1
behavioral2/memory/4092-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2720-26-0x0000000000500000-0x000000000050B000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	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 4092 wrote to memory of 2720	4092	2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe	87
PID 4092 wrote to memory of 2720	4092	2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe	87
PID 4092 wrote to memory of 2720	4092	2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_2a8b59d4988e95293e1fec049b7a1261_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2720

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
47KB

MD5
54d027c76f750a1336d25550cfbb0a26

SHA1
4c181c430429ce07815347decd73c86320e9c9de

SHA256
de034630b19595aafcdd75dbb7412226176d42a08ead4aebc154c308068ce9c7

SHA512
75794cc649fb49dc0815db02b89fcb0a32b54779390048c54248cee2929bdc4ad9e140c01562b4ca31c4e0b679877873045af71158e1e9dd99ab05efaed7309d

Download Submit
memory/2720-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2720-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2720-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4092-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4092-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4092-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4092-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4092-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download