c2ce1549242e6daca4a1938d23264f07055114ec8b5abd2e5fe28330568ba4f4

Analysis

max time kernel
140s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 05:00

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General

Target

2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe
Size

39KB
MD5

805ee2ee1555ad0f5678be49487c6c97
SHA1

8b86f9e49b4e7ed45d674a47342e430013de3307
SHA256

c2ce1549242e6daca4a1938d23264f07055114ec8b5abd2e5fe28330568ba4f4
SHA512

2d95346101a5a49c63e6b494c98e90237d68c59716447098361ad729264fce493641693991a41eb56b13a3f9c8b9099c03863f0f9e626d35b38931c94965a936
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNWd:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2132-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325d-13.dat	CryptoLocker_rule2
behavioral2/memory/2132-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2132-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002325d-13.dat	CryptoLocker_set1
behavioral2/memory/2132-18-0x0000000000500000-0x000000000050B000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3664	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 2132 wrote to memory of 3664	2132	2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe	91
PID 2132 wrote to memory of 3664	2132	2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe	91
PID 2132 wrote to memory of 3664	2132	2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_805ee2ee1555ad0f5678be49487c6c97_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3664

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=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:4980

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
c9f55b2cb2336ebbcf8ff82362c234eb

SHA1
2027944b6fe7836730057443d195d9045cfa5a8c

SHA256
ff5d75ee95915f8d10ca8e624505986b0306fa83fef82421f5ad5269e1d0993f

SHA512
299f8d85e45257050e14b71cd6a982d363f051c7134b1252a35ff1ae43a1bdfd55237dcaf23a99d8dae9cc9224206307eaa31d234d42ac96e1e7255132a59b7b

Download Submit
memory/2132-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2132-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2132-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2132-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2132-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3664-19-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3664-22-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download