dbb91c1beaed8b7a2973e6eb6919dab13d307b042825e4872ffd6078ea923249

General

Target

2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe
Size

39KB
MD5

26781867b75fd3f9f5c83ef02c0e0d7c
SHA1

6452438cd8eafa8a5f92513e3840dfc7ae628687
SHA256

dbb91c1beaed8b7a2973e6eb6919dab13d307b042825e4872ffd6078ea923249
SHA512

94481870c3b441ce7c40813742b76252e63c541f4b825e9de2c49706644fbca53d1f4cf365276fb0b00fbfe90ffbf89aaae39b84581fc91842d20b64b8ab5209
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8O:qDdFJy3QMOtEvwDpjjWMl7Tdn8O

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2068-12-0x00000000005B0000-0x00000000005C0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2840-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2068-12-0x00000000005B0000-0x00000000005C0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2840-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2068-12-0x00000000005B0000-0x00000000005C0000-memory.dmp	UPX
behavioral1/memory/2068-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2840-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2840 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe

pid process

2068 2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe

pid	process
2840	asih.exe

pid	process
2068	2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2068-12-0x00000000005B0000-0x00000000005C0000-memory.dmp	upx
behavioral1/memory/2068-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2840-27-0x0000000000500000-0x0000000000510000-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_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe

description	pid	process	target process
PID 2068 wrote to memory of 2840	2068	2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe	asih.exe
PID 2068 wrote to memory of 2840	2068	2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe	asih.exe
PID 2068 wrote to memory of 2840	2068	2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe	asih.exe
PID 2068 wrote to memory of 2840	2068	2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_26781867b75fd3f9f5c83ef02c0e0d7c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2840

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
39KB

MD5
0f22e8f3926231852746c9cde6a8dabd

SHA1
8daafde29d4b042645052dedba18ead50d8b6090

SHA256
a4e1f532476654d450ce088529de5ba7327188b4d059f1288b3a43bd145e29d9

SHA512
b725ca33030994b5f5c5b7eaa16667816f01557ce378c4a73f5ebb9a1556605851854facb98e6c4bd3cd66aeabda7a85b46b3ca161ac78495e170e81bad479fa

Download Submit
memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2068-1-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2068-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2068-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2068-12-0x00000000005B0000-0x00000000005C0000-memory.dmp

Filesize
64KB

Download
memory/2068-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2840-19-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2840-26-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2840-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads