e2fdbcb2a80d7b2bca9ada4a598a9fef88bfdb4b02f45bb190a2c5d3079e2a2b

Analysis

max time kernel
140s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-04-2024 11:55

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General

Target

2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe
Size

50KB
MD5

ae90d7e689aca7f21da27c1eab33faf8
SHA1

95a806990291773c8297d3e7cb4d0440832454a3
SHA256

e2fdbcb2a80d7b2bca9ada4a598a9fef88bfdb4b02f45bb190a2c5d3079e2a2b
SHA512

3f9921a3e8e19ebcd91957b110692930949eead795e0ebb631318e95ece924cdfedf7faa98f82c8c2e26a80ea4465f1a2e262fb50908177a1d140217d56c8bc7
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxX:X6QFElP6n+gJBMOtEvwDpjBtExX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023157-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023157-12.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	2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4536	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 4176 wrote to memory of 4536	4176	2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe	93
PID 4176 wrote to memory of 4536	4176	2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe	93
PID 4176 wrote to memory of 4536	4176	2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_ae90d7e689aca7f21da27c1eab33faf8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4536

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=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:1376

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
20fb714bef77ece4bedcd51931f3c093

SHA1
a038dc968f9041f6014eda2d53c8774c6814713d

SHA256
8c7091b5430ba165761f88783177b89cb5809bb3d3f18fa096dbf9db5b7568ac

SHA512
4853f133994a98e7d17dfaeb29db96aa20c1ac043f854c5e0279e44efe8bb79c6cfe906cc1f3f0e4f7e506d04c9f3430c7af5ead1eb63dbbeed670522e7d42f1

Download Submit
memory/4176-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4176-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4176-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4536-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4536-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download