a60bdf08d0a5b68eabbc1d068dab89fa8c0ae9d9d4602407de4e28c8e7c01319

General

Target

2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe
Size

40KB
MD5

80b296216c7641557716de6fb30c872b
SHA1

fe33aeca85a9c304b87f7ce32cb21afc01644575
SHA256

a60bdf08d0a5b68eabbc1d068dab89fa8c0ae9d9d4602407de4e28c8e7c01319
SHA512

8611c1c6e4ec6aa203fb83dd331b795235c31e2f995028e48ec59e7dbdec0a778007ebb3ed1e1091daa39217d4c65f9925b4abc8eb126314186579d3e3bb0d21
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBAt:qDdFJy3QMOtEvwDpjjWMl7TdS

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2120-14-0x0000000000670000-0x0000000000680000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2120-14-0x0000000000670000-0x0000000000680000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3016-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3016 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe

pid process

2120 2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe

pid	process
3016	asih.exe

pid	process
2120	2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3016-28-0x0000000000500000-0x0000000000510000-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:

2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe

description	pid	process	target process
PID 2120 wrote to memory of 3016	2120	2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe	asih.exe
PID 2120 wrote to memory of 3016	2120	2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe	asih.exe
PID 2120 wrote to memory of 3016	2120	2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe	asih.exe
PID 2120 wrote to memory of 3016	2120	2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_80b296216c7641557716de6fb30c872b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2120

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3016

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

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
40KB

MD5
5de3b6c2b0ff160194bf26115e48153b

SHA1
27d34f7b2b62dd50525d2e7759f7128286f661d9

SHA256
2fe19d199dca47c7f839b6a3d339fe32be9dfbab05f6f0bd358bef7d972a49dc

SHA512
1d9884583ac239007c279a8a8564ba0b4651562876a7ab00d53780c033bb8d9bb46b8cbab835db1d8fbb9de73f18881febd7480833e90bc75979a52b97237af3

Download Submit
memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2120-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2120-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2120-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2120-14-0x0000000000670000-0x0000000000680000-memory.dmp

Filesize
64KB

Download
memory/3016-19-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/3016-27-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3016-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads