d7d5997039f9f3f9f4c4984af6db1e60528edfd2ef33c73a8ea301b1403b21f5

General

Target

2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe
Size

80KB
MD5

f7bab1dd4fa17196ee63758d8b6ec7d2
SHA1

9adb2b37fb96def27a7eaafedd55f4e352c94c74
SHA256

d7d5997039f9f3f9f4c4984af6db1e60528edfd2ef33c73a8ea301b1403b21f5
SHA512

5b5fadce0ec92a7ffb40754bd7bb738d4bed2bc56503805fb09dcbdb829bb5244c76240b7512690c373658eb338b273a538b16ae9b766866d22fc157b0819b43
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdWZm:T6a+rdOOtEvwDpjNtn

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2516-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2516-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2656-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2656-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2516-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2516-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2656-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2656-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2516-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	UPX
behavioral1/memory/2516-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2656-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2656-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2656 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe

pid process

2516 2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe

pid	process
2656	asih.exe

pid	process
2516	2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2516-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	upx
behavioral1/memory/2516-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2656-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2656-27-0x0000000000500000-0x0000000000510000-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:

2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe

description	pid	process	target process
PID 2516 wrote to memory of 2656	2516	2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe	asih.exe
PID 2516 wrote to memory of 2656	2516	2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe	asih.exe
PID 2516 wrote to memory of 2656	2516	2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe	asih.exe
PID 2516 wrote to memory of 2656	2516	2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_f7bab1dd4fa17196ee63758d8b6ec7d2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2516

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2656

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
81KB

MD5
3d92cfa492dcb5ca8c020f67cabfbd12

SHA1
91cd9c79f1e2f6d0c20b7217dbc9bebface106fc

SHA256
d8ad2c8dfa318dc36bce048c702c559bc3c8e25a58a5309fad9ea374a5f261a5

SHA512
c6a1c6982a1b2fa966ee68a0bcf1c84109fe7fbc54ffebc8905bd5bdd4216f4536f15d7b553d459f88859bde1e9190ae3cc5d7040307129aa0e1d7ae890e8b80

Download Submit
memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2516-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2516-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2516-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2516-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

Filesize
64KB

Download
memory/2516-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2656-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2656-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2656-21-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2656-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads