9bbc4dbd375d6a7a19dc51c90cee88f0c4ff456c0c373d6b391749cdb811cd36

General

Target

2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe
Size

69KB
MD5

4190a8badb15f3ec0bc2f17cdeca669f
SHA1

3ce3d9e9005b6762e4df199f444604eefc3a9238
SHA256

9bbc4dbd375d6a7a19dc51c90cee88f0c4ff456c0c373d6b391749cdb811cd36
SHA512

9dc01a9a23cd81c69a97048c30a4b40d6bb5e086dbdf41746afd3377127be66cafa17a025f150b3d49e1518644a94c84e97d29fe447e282bc40ea4b2101ebebc
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PY:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1424-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1300-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1424-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1300-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1424-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1300-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1300 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe

pid process

1424 2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe

pid	process
1300	asih.exe

pid	process
1424	2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1424-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1300-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe

description	pid	process	target process
PID 1424 wrote to memory of 1300	1424	2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe	asih.exe
PID 1424 wrote to memory of 1300	1424	2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe	asih.exe
PID 1424 wrote to memory of 1300	1424	2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe	asih.exe
PID 1424 wrote to memory of 1300	1424	2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_4190a8badb15f3ec0bc2f17cdeca669f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1424

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1300

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
69KB

MD5
e6c25ebe85122181cf96a25262543838

SHA1
8318d0df416f90a55ca9fa851044b996a72178c6

SHA256
3b49ab7826d3ca8d15fe6c399fdc3954636d4c1c7f9ea879b7034fee264e6cc9

SHA512
8335ba9dab44468a5f95b36565a0f542a0bcd26b507a77d39b3ba48c408c4d6cb7e56504a19c6684832b3f32e49445490d31734e0a1848e0f6af0ef546cdf43e

Download Submit
memory/1300-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1300-19-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1300-26-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1424-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1424-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1424-9-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1424-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads