eeb09b710aa55df326e611e2491f25075e4c3ea729f37c2e4db960e8a3c30b5b

Analysis

max time kernel
145s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 15:07

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General

Target

2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe
Size

50KB
MD5

0de2d49634e9eb50d54dbecc611e12ff
SHA1

d2c959c3e42d4ee2a06b34a12b7a08aa15b2407a
SHA256

eeb09b710aa55df326e611e2491f25075e4c3ea729f37c2e4db960e8a3c30b5b
SHA512

4a9ad6fae27cedd59b6d057693d89051f8d44b415daff645bdc486af317d0146c6c395a02c9166536689a2e5f1a68708be1e6ee2cdf0dd6aebc04cabc61adf28
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcXaG:X6QFElP6n+gJBMOtEvwDpjBtExmlk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
440	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 4608 wrote to memory of 440	4608	2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe	96
PID 4608 wrote to memory of 440	4608	2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe	96
PID 4608 wrote to memory of 440	4608	2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_0de2d49634e9eb50d54dbecc611e12ff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:440

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=4020 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:1212

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
51KB

MD5
2c91f1b9735e8f0ffada6f1c9ddd87f7

SHA1
07fcad9568b72cad9076b46af77873081003e441

SHA256
58c2df7bd6fa3e417230ecd115966fe8de8595895f78f68f4b63bb46e965e08e

SHA512
891bf218001bf4dfd179d4254012b5ac7d2cb83aa6bb030b871ac700d86acd56ab17642e81edc0077f0e0b16fddf849bf7d0287616a83367448a5a67cd7c7c25

Download Submit
memory/4608-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4608-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4608-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download