fdae3212cf3bccf0aea0b0b76f5541ad33c32af2361535152c94fb099a849103

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 06:03

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General

Target

2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe
Size

43KB
MD5

9603c9aca1e7914aae2cfe168edcbc53
SHA1

0348a036cf140399b157c9a6c0c68a16c2e6aaf6
SHA256

fdae3212cf3bccf0aea0b0b76f5541ad33c32af2361535152c94fb099a849103
SHA512

cf942c09ea557941443858954795701ee3ffb4cf3e12cd3a650beedfaa027325db8c4096a12dd5b2b801e06f1a01d71ed0f2f4df60667226f7da05d33a601ec5
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+MA:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3956-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f3-13.dat	CryptoLocker_rule2
behavioral2/memory/4592-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3956-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3956-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231f3-13.dat	CryptoLocker_set1
behavioral2/memory/4592-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3956-18-0x0000000000500000-0x000000000050B000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4592	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 3956 wrote to memory of 4592	3956	2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe	85
PID 3956 wrote to memory of 4592	3956	2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe	85
PID 3956 wrote to memory of 4592	3956	2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_9603c9aca1e7914aae2cfe168edcbc53_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4592

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
43KB

MD5
38521b7803b2b55ca8957dfa9059ad57

SHA1
807b73c8ff2ff3f5a385a3e6c9ecac5103062447

SHA256
3d6e055bcba2aa34b5570a96fbd315c74dba5c768fb39d1b62d0c16cc564e04c

SHA512
e90a93c1e662130e125902c6ad7c2af90bdde5f29eea558947cce92b839e6272ed6e439506fc1a9ba4694dd39ad2efab2c8d7eff7492312fcec32faf9b3e307b

Download Submit
memory/3956-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3956-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3956-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3956-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3956-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4592-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4592-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download