df60fc5d72251ebe88acdb8336897cf5a91719b107d3930143a3ef694bd17350

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14-05-2024 03:51

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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 4 IoCs

resource	yara_rule
behavioral2/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/2696-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2380-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/2696-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2380-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002328e-13.dat	UPX
behavioral2/memory/2696-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2380-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2380	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000700000002328e-13.dat	upx
behavioral2/memory/2696-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2380-26-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2380	2696	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	82
PID 2696 wrote to memory of 2380	2696	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	82
PID 2696 wrote to memory of 2380	2696	2024-05-14_640e2a06a1e1da8a8ee512f036be23b9_cryptolocker.exe	82

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⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
59KB

MD5
c1475eecfc38763fc99775bd1ccd3220

SHA1
51d525974dbc8854e976222a60b24775c7118d78

SHA256
b33ca84694057f86108217d01ce409118e8496fbe366072e91af26c090668408

SHA512
9822dc8322607b57fa44408c5f2455f73280a2bb3cb771f104414167f89286aaac8d765a0dca722dbe8d27477acd7f40a471efa2cc9e77d1876a12a2f379ad1d

Download Submit
memory/2380-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2380-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2380-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2696-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2696-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2696-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2696-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download