5a753a4104973be3a0f7e1b285d7497a0e4bcf5fa0c019834e416d1342ab6093

General

Target

2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe
Size

59KB
MD5

52fe52829fe63c2eff11f64bf63c40ad
SHA1

b2bc6d01565299af92922a5390477b48099f4d9d
SHA256

5a753a4104973be3a0f7e1b285d7497a0e4bcf5fa0c019834e416d1342ab6093
SHA512

f162cee1e2066c879cdf86d62297eec1e671cd42f90b23ddbd936e1878918ab3ced10d7e878b37201f76a7cf3e061d2f6d53ba90c8f6196f7b8d9194ccf26ec1
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pb:H6QFElP6n+gou9cvMOtEvwDpjCpVXl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2172-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2172-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2172-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2828 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe

pid process

2172 2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe

pid	process
2828	asih.exe

pid	process
2172	2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2172-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-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:

2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe

description	pid	process	target process
PID 2172 wrote to memory of 2828	2172	2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe	asih.exe
PID 2172 wrote to memory of 2828	2172	2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe	asih.exe
PID 2172 wrote to memory of 2828	2172	2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe	asih.exe
PID 2172 wrote to memory of 2828	2172	2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_52fe52829fe63c2eff11f64bf63c40ad_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2828

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
60KB

MD5
f8ee0ddc8216e3b259df4e3189f7bc9e

SHA1
e11399a693a22a3e9cf469a0cb431ec52c5b50da

SHA256
2dc6fd0c8e12396a74842e5f1254aa0b9a96121e7c4e15fec2b32a8d37ecc8ec

SHA512
cc89721758bbfcf845247c0ef0de7312567f035443e9e664464c6ba0c03920f991158c2362955b1b9ea26f48384ee877842b60ffbf64fe85b376fcc0974e18dc

Download Submit
memory/2172-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2172-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2172-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2172-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2172-13-0x00000000024C0000-0x00000000024D0000-memory.dmp

Filesize
64KB

Download
memory/2172-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2828-19-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2828-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads