d2549d689259f74723cc33f2238195c6664f5cbf4405a9b3b50f8f01569c9b82

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 00:48

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General

Target

2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe
Size

52KB
MD5

bd26509f4ecf02482f396725c85bf37f
SHA1

cf9bd5c00f855ae7bc879430e4b805346592831f
SHA256

d2549d689259f74723cc33f2238195c6664f5cbf4405a9b3b50f8f01569c9b82
SHA512

90fae266a8737fdf62339ed73b95077ddd79cac284319c2a3cbe302e8596f3cc15a07c86c398eacd51ef3187c0dca6258d2c98b9802aada795cbcd4016a321d6
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfSAW:79mqyNhQMOtEvwDpjBxe8GGfVW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1248-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/3020-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1248-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/3020-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3020 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe

pid process

1248 2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3020	asih.exe

pid	process
1248	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe

description	pid	process	target process
PID 1248 wrote to memory of 3020	1248	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe
PID 1248 wrote to memory of 3020	1248	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe
PID 1248 wrote to memory of 3020	1248	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe
PID 1248 wrote to memory of 3020	1248	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1248

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3020

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
52KB

MD5
e6d2a732211b5fef197139d678c14c5a

SHA1
0059117af0fbef8b9331dbf2fe4b57eec30d2a1f

SHA256
39cc40c37e8d8bb98da02c882bf340710f5dfbd54f83400787769bb050f125e1

SHA512
de345162fe61c655d3042973990d4f33a0806dd7283bd4ef6f8f1bad76961d34afdbe72ee760bc2fa89c91112329ac892e1033ec102f582a7dad97700820a8e4

Download Submit
memory/1248-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1248-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1248-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1248-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3020-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3020-17-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/3020-24-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download