5f078e4d9fb0bc9753452660a3b12c095d4bb1a71066bea581f7786739612df9

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-06-2024 14:37

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General

Target

2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe
Size

51KB
MD5

db7460d6609be2bb51d68ae2cb9cf352
SHA1

86bbff660af0219d31b3a510ba321da356806de7
SHA256

5f078e4d9fb0bc9753452660a3b12c095d4bb1a71066bea581f7786739612df9
SHA512

1d90367f182c2200187b971f904c355aeb6d3eb522e5ba16104cf2afccef9bcc459028c0a978be45fda25b264eda63e9bbfbc5e8bb038b2fac551782436a2087
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Moccw:qmbhXDmjr5MOtEvwDpj5cDtKkQZQQh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002351b-13.dat	CryptoLocker_rule2
behavioral2/memory/560-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/932-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/560-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/932-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/560-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/932-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000900000002351b-13.dat	UPX
behavioral2/memory/560-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/932-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/560-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
560	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 932 wrote to memory of 560	932	2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe	89
PID 932 wrote to memory of 560	932	2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe	89
PID 932 wrote to memory of 560	932	2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_db7460d6609be2bb51d68ae2cb9cf352_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:560

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=4012,i,2607710392823067546,4648797561512801463,262144 --variations-seed-version --mojo-platform-channel-handle=2860 /prefetch:8
1⤵
PID:1044

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
7b59798b843c92e9dae0386b9069b642

SHA1
f3e8e1b1ca9ae7fb1270cf373533bd05ce0e1573

SHA256
1d853cac501168f11afb7de59bbf1921cc5c1145793891ab3525082532772cf1

SHA512
9222bb1d204df1601bd1f11e8de67e8ccb5288aa875a2a2fc7ecd68f24dee4cf2d090fbf6c7184241dbe8a7bd8bd28e3f3d94de20aee7df47d30500413c3b75d

Download Submit
memory/560-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/560-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/932-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/932-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/932-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/932-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/932-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download