e1a111308d33063862d2656c6dea7e6a5cdbf7adb655f284ec0c5260460b243c

Analysis

max time kernel
7s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08-06-2024 06:03

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General

Target

2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe
Size

44KB
MD5

4e9d23d4e670eed0eaccfcbcbbf2d2aa
SHA1

a374c261c7b3e6a5d7799b441d2810036c2e4f34
SHA256

e1a111308d33063862d2656c6dea7e6a5cdbf7adb655f284ec0c5260460b243c
SHA512

f53757d90bddaacebf4d00c3d7bd958d0f4cfd42ec061616334880541d08a81e85211afc73c4dd4b51d69a60c507e8fd960ebd24bcd15a84dbd7408fa59de635
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUkZ:bm74zYcgT/EkM0ryfjdZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/872-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0005000000022975-13.dat	CryptoLocker_rule2
behavioral2/memory/2280-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/872-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2280-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	hasfj.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 872 wrote to memory of 2280	872	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	90
PID 872 wrote to memory of 2280	872	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	90
PID 872 wrote to memory of 2280	872	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:872
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2280

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 --field-trial-handle=3596,i,17096020621006928097,15544233752327415349,262144 --variations-seed-version --mojo-platform-channel-handle=1316 /prefetch:8
1⤵
PID:4052

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\hasfj.exe

Filesize
44KB

MD5
c27bdde802411c8cf8c8d1b967818a30

SHA1
a5c536820914f5405a4948558be36ba80b16ebae

SHA256
6218eb8bff15fcddb7e3c99d32e9bd1c55cb75f7e2d9e9a27c7bb6b716acd933

SHA512
ecb4cb5e58801492498b52f12be4c7573e17669227c6bccf2d73cda4077f9121b59400da47f4deea77a740202fe86753432430b901bfefb85bb1a424406a3ca6

Download Submit
memory/872-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/872-1-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/872-9-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/872-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/872-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2280-21-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2280-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2280-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download