dc875aa30d94f138c738f11f4885352d28ff39876933a6e244a0d0e0a793cfed

Analysis

max time kernel
162s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 00:22

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General

Target

2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe
Size

49KB
MD5

0fc8db2fa21a8ceed308cf61f459113b
SHA1

034ad2fd8110cc2fc8641c8b73aa16afc6377f6a
SHA256

dc875aa30d94f138c738f11f4885352d28ff39876933a6e244a0d0e0a793cfed
SHA512

eb4fd4dc18133f9b114393eb6100df3b92df41c1cf52504f1fa547f7e2b5c7c6a3906ffc52b3da909f2b56ea1f17bdc5eaf4d1cf12e6957e565a256a6bf5f106
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxr:X6QFElP6n+gJBMOtEvwDpjBtExr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023260-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023260-12.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	2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	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 4132 wrote to memory of 2356	4132	2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe	102
PID 4132 wrote to memory of 2356	4132	2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe	102
PID 4132 wrote to memory of 2356	4132	2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe	102

C:\Users\Admin\AppData\Local\Temp\2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_0fc8db2fa21a8ceed308cf61f459113b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2356

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=3768 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:4168

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
50KB

MD5
eb08fa582d171cf89f516a6b7e246783

SHA1
8fd0b9374c7573c430f5b4d20991f42f9f224707

SHA256
59da2b77f2ef7d38ac22b826a53f0dbe05f91f90af4a0150c5cd415044f82f30

SHA512
8b1e9b84e252d5eb053d85b24b7d6a997a8f02fed8660fc924cc9b731251b88821b7a52106d5a6d607ef0652ac30a422f353091532598be92c4172bbd9880242

Download Submit
memory/2356-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2356-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4132-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4132-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4132-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download