b2c1109d34d7675149669cb97ff953577809a31b9a2e652aad754c31938576a2

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
17/06/2024, 07:32

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General

Target

2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe
Size

42KB
MD5

7b88e03276361c117d0fa9ba5733025d
SHA1

f453e4e9c50f768ea6227d81170344cf922ff808
SHA256

b2c1109d34d7675149669cb97ff953577809a31b9a2e652aad754c31938576a2
SHA512

a2a5d0119fe94a39b67e1d0399f42ec67e5540c6b589926b170159ae9995ded663d55101e44b9acb7b4fca488f1fd2c5b2933e027d9b5d37bb6239474e5d1ea5
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoWv:ba6YcA/Xk3wXFXSqAJb

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000233d6-13.dat	CryptoLocker_rule2
behavioral2/memory/5092-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1144-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5092-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x00070000000233d6-13.dat	UPX
behavioral2/memory/5092-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/1144-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/5092-27-0x0000000008000000-0x000000000800F000-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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5092	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00070000000233d6-13.dat	upx
behavioral2/memory/5092-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/1144-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/5092-27-0x0000000008000000-0x000000000800F000-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 1144 wrote to memory of 5092	1144	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	82
PID 1144 wrote to memory of 5092	1144	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	82
PID 1144 wrote to memory of 5092	1144	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5092

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
42KB

MD5
8dd1728a343985645c4bc04f40a016e9

SHA1
e857139bbf73ec91b38e065508764e678b4ff341

SHA256
4d020e156c94e6caf5d5b0f6786b3661f6377b794a8c647503d294ee5cac1d3a

SHA512
70ec36ec2749e421dcf58ff029e4e767a1f764bce5d7024e9c11eab2453a8b1800924e673e38390b6f82f0ad973889cc83f0a1ac6a1fa6c98df21ab53ee2a5db

Download Submit
memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1144-1-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1144-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1144-9-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1144-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/5092-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/5092-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5092-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download