f90df14e16fefa05afb489ce586e8b4c6ce196a0a594032a82748d4b304ccf91

Analysis

max time kernel
150s
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
30/05/2024, 06:52

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General

Target

2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe
Size

24KB
MD5

98a3f4b1289b3924eaceabdf82a5f5a1
SHA1

82925b3518b637f6f89903407e008dc70f8574c4
SHA256

f90df14e16fefa05afb489ce586e8b4c6ce196a0a594032a82748d4b304ccf91
SHA512

ce9f61ca8bb2d95a2dfa89b901c01518ac26f615d3f71e12a9ff4c75242fc8646bc9b75c2ccfac04da08f5f17bfcdcd3bbc6a0aede3f2f4920da0abc2f07c1b2
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ2Aw:bVCPwFRo6CpwXFXSqQXfjAsJ0

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1280-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000226e8-13.dat	CryptoLocker_rule2
behavioral2/memory/4428-19-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1280-18-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4428-28-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1280-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x00090000000226e8-13.dat	UPX
behavioral2/memory/4428-19-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/1280-18-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/4428-28-0x0000000008000000-0x000000000800E000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4428	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1280-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x00090000000226e8-13.dat	upx
behavioral2/memory/4428-19-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/1280-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/4428-28-0x0000000008000000-0x000000000800E000-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 1280 wrote to memory of 4428	1280	2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe	83
PID 1280 wrote to memory of 4428	1280	2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe	83
PID 1280 wrote to memory of 4428	1280	2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_98a3f4b1289b3924eaceabdf82a5f5a1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1280
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4428

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\hasfj.exe

Filesize
24KB

MD5
5dbc9e4c6386d08428b32ef2536596ff

SHA1
a54345c4c8a426f4a5523b7dd58ec99efd5e9753

SHA256
17102125e040d4dd3ff7222665dfb9bc44a2929d2727c2a69a01d38a6b8a4517

SHA512
0745e24b2827f1fdfef2021439078e0896935ec3f49041ba4533d5f124b9b54b9f16490f1353f8b7f1428b653745bdb44a30056e02520de25d1570460a8574d2

Download Submit
memory/1280-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1280-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1280-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1280-9-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1280-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/4428-19-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/4428-27-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4428-28-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download