4a1cb0a2d6908293a60a37caf0f0e55bd85775d52d0447a7d8c593d83798c81a

Analysis

max time kernel
133s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 05:34

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General

Target

2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe
Size

33KB
MD5

4d1fecfeca4560d0787990d213a5b9f8
SHA1

49e572d61e9a26a57113db6e8b5b11902c2983ef
SHA256

4a1cb0a2d6908293a60a37caf0f0e55bd85775d52d0447a7d8c593d83798c81a
SHA512

7c68316b07de113fa5a73090e9f1ed02388471053dc6bbba899e86ccc911d312fe0d75a5214931bdd50591ecf642c53b8aaaa34ce82f19ceaa248bdb15869d1f
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6ckJp0qAgmEzXKxA+T63:bAvJCYOOvbRPDEgXRc+BAILiy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023314-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
1132	demka.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 968 wrote to memory of 1132	968	2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe	96
PID 968 wrote to memory of 1132	968	2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe	96
PID 968 wrote to memory of 1132	968	2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_4d1fecfeca4560d0787990d213a5b9f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:968
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1132

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4252 --field-trial-handle=2224,i,17688331074622862378,73816879873678745,262144 --variations-seed-version /prefetch:8
1⤵
PID:3428

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\demka.exe

Filesize
33KB

MD5
9da3d31c7d06b47de4fadfdee7aad92a

SHA1
41d63e7042d874c893261f860e4fd6e464dae183

SHA256
ea937a8524436b159a125d768c57817a65b3c3545644674f3fd59792d80a28ab

SHA512
0dc6d99518eac9df0ead5def844fcb9ef4ee993386858b8721e5b9c52d73aae687422931141e4c5bbdae6fd4bcb7d1d3a767b4e0d4fa7c758279220bfdeb27bc

Download Submit
memory/968-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/968-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/968-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1132-17-0x0000000000780000-0x0000000000786000-memory.dmp

Filesize
24KB

Download