df60fc5d72251ebe88acdb8336897cf5a91719b107d3930143a3ef694bd17350

General

Target

2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe
Size

59KB
MD5

640e2a06a1e1da8a8ee512f036be23b9
SHA1

c73f176db5805e0df8b2a11bbfdfb608f7a0bb59
SHA256

df60fc5d72251ebe88acdb8336897cf5a91719b107d3930143a3ef694bd17350
SHA512

beeff3912965313dec8e13697b8f3496069e55e08b9bb51bf799f9ec6ce223fc59b93c6d88a7da7c9063b6cba58cf87f15236eb45bec5f83ff2dcb583802ee4e
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pz:H6QFElP6n+gou9cvMOtEvwDpjCpVXd

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000016056-11.dat	CryptoLocker_rule2
behavioral1/memory/1932-13-0x0000000000630000-0x0000000000640000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3008-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1932-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3008-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000016056-11.dat	CryptoLocker_set1
behavioral1/memory/1932-13-0x0000000000630000-0x0000000000640000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3008-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1932-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3008-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000016056-11.dat	UPX
behavioral1/memory/1932-13-0x0000000000630000-0x0000000000640000-memory.dmp	UPX
behavioral1/memory/3008-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1932-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3008-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3008	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1932	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000016056-11.dat	upx
behavioral1/memory/1932-13-0x0000000000630000-0x0000000000640000-memory.dmp	upx
behavioral1/memory/3008-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1932-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3008-27-0x0000000000500000-0x0000000000510000-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 1932 wrote to memory of 3008	1932	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	28
PID 1932 wrote to memory of 3008	1932	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	28
PID 1932 wrote to memory of 3008	1932	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	28
PID 1932 wrote to memory of 3008	1932	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3008

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
59KB

MD5
c1475eecfc38763fc99775bd1ccd3220

SHA1
51d525974dbc8854e976222a60b24775c7118d78

SHA256
b33ca84694057f86108217d01ce409118e8496fbe366072e91af26c090668408

SHA512
9822dc8322607b57fa44408c5f2455f73280a2bb3cb771f104414167f89286aaac8d765a0dca722dbe8d27477acd7f40a471efa2cc9e77d1876a12a2f379ad1d

Download Submit
memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1932-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1932-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/1932-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1932-13-0x0000000000630000-0x0000000000640000-memory.dmp

Filesize
64KB

Download
memory/1932-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3008-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3008-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3008-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3008-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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