bb283fac723ac0e8d9262ab0709baa8d5328590f7d4b053ca8f573b600198e71

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 05:32

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General

Target

2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe
Size

43KB
MD5

21b06f7409d8d7074192f2dafd59ffb4
SHA1

c9849442c873fcd4663b0af36993f89815671117
SHA256

bb283fac723ac0e8d9262ab0709baa8d5328590f7d4b053ca8f573b600198e71
SHA512

96ee69794dd249cc0d918f88200706ce4f6ea11a7399b20085525f4d0c9bc5ffc52b501e2bf88ff06492ad95bb6a99a244c9c7125eacd6319a0ac5a87aa8d34c
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+MK:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2228-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023329-13.dat	CryptoLocker_rule2
behavioral2/memory/2228-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2228-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023329-13.dat	CryptoLocker_set1
behavioral2/memory/2228-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1544	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 2228 wrote to memory of 1544	2228	2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe	97
PID 2228 wrote to memory of 1544	2228	2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe	97
PID 2228 wrote to memory of 1544	2228	2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_21b06f7409d8d7074192f2dafd59ffb4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1544

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=4704 --field-trial-handle=3084,i,11997299123381683778,5904351605020331957,262144 --variations-seed-version /prefetch:8
1⤵
PID:1468

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
43KB

MD5
3a9019bcdba43b36e31ee0a6a77f4104

SHA1
e031db828e0878bdeecb482c0ac10d034b7abc99

SHA256
ed1ca4c4a4a94a99117be7b1d2837d156db493fe69ec3168aa8899751b2f5621

SHA512
8e9f02f53c9d0558afa65f9faac4a8f5f0cfc8a81136f721df3ffbae81e1b8510f8c2b497949a6acb5df8ba87c4526781f67d624041cf653276a8fdc522ef6ed

Download Submit
memory/1544-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1544-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2228-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2228-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2228-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2228-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2228-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download