0425da3498bcea441844048ab16e07288cf92a36a6156af050ff29e12afa7e58

Analysis

max time kernel
136s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2024, 15:32

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General

Target

2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe
Size

96KB
MD5

a40c5c4b1fc23c14704134cca5a6b109
SHA1

0beff64fbe826a6b6ac3ddc1ed34ade716dada48
SHA256

0425da3498bcea441844048ab16e07288cf92a36a6156af050ff29e12afa7e58
SHA512

d9b5d33e0ba7b9bf6534f2e8fe63cca818c076172b37769b7dd1ff923340321b7747d57675176cb50a8a1511654b2eff02a4d2957657f3a44574336700fc5738
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCJ0:26a+2OtEvwDpjtzp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002312d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002312d-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	2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3120	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 444 wrote to memory of 3120	444	2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe	88
PID 444 wrote to memory of 3120	444	2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe	88
PID 444 wrote to memory of 3120	444	2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-22_a40c5c4b1fc23c14704134cca5a6b109_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:444
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3120

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
96KB

MD5
12a221277e1ea09e03fa9ce306383793

SHA1
c01b13909a8826882dffc5bc41fffb0e28c3a65b

SHA256
e7fbbe1f13c1fa2445b637e79ce2047eba0aa826ef12d20ec85acf6e3fae6b27

SHA512
9796cb986170747f887f249284f94de0eaa80c4854ea5869086ee6ff7849b95db407c55d101652f3b76cf6dcaa5818ccf32738d7e36cb6f79ed4fac571e86318

Download Submit
memory/444-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/444-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/444-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3120-17-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3120-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download