6a735c20a12ac5a5cf552f1000e6aa3487c855bf79d54867081c15e80c5c5b6b

Analysis

max time kernel
147s
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
09/05/2024, 13:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe
Size

48KB
MD5

ebf8624eede22692da42f38daa52e07b
SHA1

92b80486e2ca429decd6be877218731966918dde
SHA256

6a735c20a12ac5a5cf552f1000e6aa3487c855bf79d54867081c15e80c5c5b6b
SHA512

84da103768c7e72337963806bbb627e602bb7d2b9c453e472dfbbe390f77dd0a9fc606a9df2eb9c2411cfc7525547a9ee39ba3987ee6bafa21d2d0d0bf4190fd
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcAo:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4740-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000235bb-13.dat	CryptoLocker_rule2
behavioral2/memory/4740-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4304-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4304-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4740-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000235bb-13.dat	CryptoLocker_set1
behavioral2/memory/4740-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4304-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4304-27-0x0000000000500000-0x000000000050B000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4304	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 4740 wrote to memory of 4304	4740	2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe	89
PID 4740 wrote to memory of 4304	4740	2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe	89
PID 4740 wrote to memory of 4304	4740	2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_ebf8624eede22692da42f38daa52e07b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4304

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=4376,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
1⤵
PID:4672

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

Loading Replay Monitor...

Downloads

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

Filesize
48KB

MD5
0c2999e72104dd3ac1e936e62145364b

SHA1
007d8261589206d6c43f5b2a0513b0b104bf1b60

SHA256
a09056b1c4f0f6a37636127e982b8b3d97532bcec5ec77c2fa393ff0ce6072b2

SHA512
f81fa4c0703b119aca2d4d9e8147d313f1037b973696466d34e7d9e54c563ea0b27ab1afc4cf4e9656263d6da4ccd925de2f5a3288fb109d24d3674a35b3933f

Download Submit
memory/4304-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4304-26-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4304-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4304-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4740-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4740-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4740-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4740-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4740-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download