f642c7426584dfd5312a45489eca2e942f1c9ee133da281b7eefc0a4cc1533c3

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 02:49

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General

Target

2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe
Size

61KB
MD5

841b3667fe06fb07eb781e3e6050978e
SHA1

e3b503b82d58cc95ab39ebfd7bdd8eafb1685f9a
SHA256

f642c7426584dfd5312a45489eca2e942f1c9ee133da281b7eefc0a4cc1533c3
SHA512

f03b60fe36af83044030c3feb2011cbd689ecb5b23897d6731a4a8b8087ff8d8fb29781a7a5f3a90a9b087e7c0afd2cce2bfbe24b27cca2057eda62cac8d0619
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzP:X6a+SOtEvwDpjBrOT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002320a-12.dat	CryptoLocker_set1

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	asih.exe

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 3232 wrote to memory of 2548	3232	2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe	90
PID 3232 wrote to memory of 2548	3232	2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe	90
PID 3232 wrote to memory of 2548	3232	2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_841b3667fe06fb07eb781e3e6050978e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2548

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
62KB

MD5
1a8de2d0e0cc2fd7bc071af83853097b

SHA1
151e361ae8a35bedfe80c95da7f2c40a2015d490

SHA256
7cc2d1170abccc475881b77577721808e881614fd8b99085aa18775b51c326ae

SHA512
fd6b4c3af7712d22dce1acf82f469f3bfe24f3e61f3f70d777ee24617fdca9e65511310982d80b11c2f917a9b483e1a568c12c48adeba12f86620df9f3d60957

Download Submit
memory/2548-17-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2548-18-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3232-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3232-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3232-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download