9785d9a4b23abed93db8c4f97adc30913b8c2cf8f3ee8ea7f3bb4e0731fd3059

Analysis

max time kernel
142s
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
02-06-2024 04:05

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General

Target

2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe
Size

32KB
MD5

f8711b838f56b2aa2435046f3c80c591
SHA1

6a6c0e2a7abfb693abc7f2bfce6d9bec08d57132
SHA256

9785d9a4b23abed93db8c4f97adc30913b8c2cf8f3ee8ea7f3bb4e0731fd3059
SHA512

f72aa4357a9a4c4bcf52a7858fa6ff67e78bef5e818ac36b247fb989a1875e039077d86ed827f4e234918064f4cba130a09787888baa25b7be700955ad50301a
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cJ3v7SH:bAvJCYOOvbRPDEgXRcJm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023214-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	demka.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4416	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 652 wrote to memory of 4416	652	2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe	90
PID 652 wrote to memory of 4416	652	2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe	90
PID 652 wrote to memory of 4416	652	2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_f8711b838f56b2aa2435046f3c80c591_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:652
- 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:4416

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=4076 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:972

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
32KB

MD5
b8fc69cd6f62bba893a1262ac03a1545

SHA1
c791924a9f06b51cbadabe27d61bb12057a43e3a

SHA256
715fe1d8414fbdacdeba20f3650f7349919954d49101405ffced617ed2f66792

SHA512
647cfc8517bbd87f84fef8d7a8bd4d87e85f9c2c326b80826db45f21047744e32236748b42aacf026c7e978acc0aac79a6daa958eb448af36831f930f2172f8c

Download Submit
C:\Users\Admin\AppData\Local\Temp\medkem.exe

Filesize
186B

MD5
7b0e63390595b127b2dbb8863f3bd213

SHA1
796e696628fca3055ce0ca8808a834a15f56e93e

SHA256
e7d87bc12b66743e8c4f7a809260d9dbee369789f2f9bdbc0b893566d993b997

SHA512
c082587f3e903995b3f45def3f111ead1811e44086c6bdef6235a850c2950be15a7869751d4249f6a5f68a9156e60418e4bdfb70481f7a3feecdf80185294a09

Download Submit
memory/652-0-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/652-1-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/652-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4416-25-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download