2492ccb2fc4d95d170312706f80b68d06245224cd929b6a3abd851b235719262

General

Target

2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe
Size

116KB
MD5

7e104fd535dd27e5d1791036533a375b
SHA1

c7e139e914fc1d6683a76a267b028c9cb9dcb3f2
SHA256

2492ccb2fc4d95d170312706f80b68d06245224cd929b6a3abd851b235719262
SHA512

2063da38140e17ca84359b2e9e87d68ccb6c6b9ff0bbb1dca9996bfa47ce9559df4965ae342614b7823018291422cfac392c50f81746e0910c91b46d2223dabb
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgerar/cF:T6a+rdOOtEvwDpjLzH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012238-11.dat	CryptoLocker_rule2
behavioral1/memory/2004-13-0x0000000002800000-0x0000000002810000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2676-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012238-11.dat	CryptoLocker_set1
behavioral1/memory/2004-13-0x0000000002800000-0x0000000002810000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2676-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012238-11.dat	UPX
behavioral1/memory/2004-13-0x0000000002800000-0x0000000002810000-memory.dmp	UPX
behavioral1/memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2676-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2676	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012238-11.dat	upx
behavioral1/memory/2004-13-0x0000000002800000-0x0000000002810000-memory.dmp	upx
behavioral1/memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2676-27-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 2004 wrote to memory of 2676	2004	2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe	28
PID 2004 wrote to memory of 2676	2004	2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe	28
PID 2004 wrote to memory of 2676	2004	2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe	28
PID 2004 wrote to memory of 2676	2004	2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_7e104fd535dd27e5d1791036533a375b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2676

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

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Downloads

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

Filesize
116KB

MD5
5dea97e2e61d82023882d324f90c7d1c

SHA1
2c563c78f57b2f004151602d64c87c7828eb7d79

SHA256
1f1c0859bf24792d1880b6cdde56ab430a3b8838502f228377840e61fa6ea5ca

SHA512
d8733af357b74c17bcbf5992a05737e9437a106b2a94e3a7910add04598c70bc04dc544256b03e6e9f32287ad08d19e7d819daab954bfc241b6c16ec030f13dd

Download Submit
memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2004-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2004-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2004-13-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2676-19-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2676-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2676-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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