816b4f5dcc3e73624909d1349c482e83e297b72f8c7659c46a2ef279b22d80c3

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 17:55

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General

Target

2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe
Size

43KB
MD5

e8b921cd3e6d6e2fbd48e147273e995a
SHA1

4394461a8599bc4a27d0befe369bcf684caf37dc
SHA256

816b4f5dcc3e73624909d1349c482e83e297b72f8c7659c46a2ef279b22d80c3
SHA512

2f51100b18e3233b0ad0f54a566f0d07cab1c836b172718e82af902fa7b79128b59d2aebeb9b132cdf2b23d432dc3614fc2194a24954a3aef0aa554cd59cd75a
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwX:79mqyNhQMOtEvwDpjBzck1o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1768-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2404-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1768-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2404-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2404 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe

pid process

1768 2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2404	asih.exe

pid	process
1768	2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe

description	pid	process	target process
PID 1768 wrote to memory of 2404	1768	2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe	asih.exe
PID 1768 wrote to memory of 2404	1768	2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe	asih.exe
PID 1768 wrote to memory of 2404	1768	2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe	asih.exe
PID 1768 wrote to memory of 2404	1768	2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_e8b921cd3e6d6e2fbd48e147273e995a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1768

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
43KB

MD5
90191be8413dda92be3216290b736375

SHA1
c47b7a721806429c8c050a0ac72fd05e5375e964

SHA256
1b6049622ea881576556a45b886a70590d69fe9552711d555434ad712aa2c76e

SHA512
53202d0d460e565374d12cc08b9385b6e437f934d500f185956b82b9d2b0e99ba4280a54ee9aad2723507cd904dc502b64babf6e6ca2b72807e5d73aab5be37c

Download Submit
memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1768-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1768-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1768-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1768-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1768-15-0x0000000002700000-0x000000000270F000-memory.dmp

Filesize
60KB

Download
memory/2404-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2404-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2404-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download