b85c4af5ca96216a701c1562fac0d8215f1840bc29c1c8b742a07c9c6402ce93

General

Target

2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe
Size

39KB
MD5

d96964648e89e0a9ab36ab7ca98ec377
SHA1

b1a932828d1081e5aba1c2a4ce478e8a7480f565
SHA256

b85c4af5ca96216a701c1562fac0d8215f1840bc29c1c8b742a07c9c6402ce93
SHA512

9bb5803454cf4a4ee927cebd8372d26a9849b46942af90c00a1d7d16546375eae35a6a51b8a5ef244edc07ab03afc66685ccc9f10b081d03af21f0201412901b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYlQ:qDdFJy3QMOtEvwDpjjWMl7T6Q

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2280-12-0x00000000027C0000-0x00000000027D0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2504-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2280-12-0x00000000027C0000-0x00000000027D0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2504-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2280-12-0x00000000027C0000-0x00000000027D0000-memory.dmp	UPX
behavioral1/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2504-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2504 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe

pid process

2280 2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe

pid	process
2504	asih.exe

pid	process
2280	2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2280-12-0x00000000027C0000-0x00000000027D0000-memory.dmp	upx
behavioral1/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2504-27-0x0000000000500000-0x0000000000510000-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:

2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe

description	pid	process	target process
PID 2280 wrote to memory of 2504	2280	2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe	asih.exe
PID 2280 wrote to memory of 2504	2280	2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe	asih.exe
PID 2280 wrote to memory of 2504	2280	2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe	asih.exe
PID 2280 wrote to memory of 2504	2280	2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_d96964648e89e0a9ab36ab7ca98ec377_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2280

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
39KB

MD5
d1e48a7d5d79eecca6e1cc3c3ad7b627

SHA1
dbcfee354397b31c521b7e34e03a42b3512cbd2e

SHA256
bd8f9d776dabef1681b4112c930e35539bd31f95764cfbcd0c727a287432b0f4

SHA512
71dcbde1ab2ee09d558fdf6d711275bde261532a9c8992844c145b97824d40e18127a42357c975c5cfcbf93b51564c19a9002168fb25bacdd05cdc9c8d8e4a03

Download Submit
memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2280-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2280-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2280-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2280-12-0x00000000027C0000-0x00000000027D0000-memory.dmp

Filesize
64KB

Download
memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2504-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads