a0c486a2d05e10e6f00da00dafe13180eba50937a5f162e3d9e3d413941e8a68

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 08:26

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General

Target

2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe
Size

72KB
MD5

423052d4fef8006037cc8dfdf57273cd
SHA1

2231a7d2777258df3df77aff24fae59fafc83afe
SHA256

a0c486a2d05e10e6f00da00dafe13180eba50937a5f162e3d9e3d413941e8a68
SHA512

17cfeea798932e2ccfb467b1fdaf4a2db905af425989c61509415603d4b08e3b4dbdece95baf08d62941edcabd52d5a7b70f15bb0540c82f442c4630deb4c7c7
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1RF:X6a+SOtEvwDpjBZYvQd2T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022775-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022775-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1592	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 884 wrote to memory of 1592	884	2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe	89
PID 884 wrote to memory of 1592	884	2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe	89
PID 884 wrote to memory of 1592	884	2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_423052d4fef8006037cc8dfdf57273cd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:884
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1592

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
73KB

MD5
ed55900be68d6f91e5591eefc9868b84

SHA1
b9b601447999f82add08e3c1c5b74e06b6a8d704

SHA256
cd2d200fcf022a4d119b190ef6544e75905c4fcf3139fbc1b169d9e984f9d6cf

SHA512
dbd4b60c4c1e5aa535673ab7d696afe84eab634604930cab908eb7ff8b1b673cdef1b2ff10ced168c9f26c0ce0e6ee99cb3dfe6c29bc4f19bb86e94a8b333f1b

Download Submit
memory/884-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/884-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/884-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1592-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1592-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download