c3ad8337208c5baf8f10f46bc7a370f9aaa9dac4c16409c0235a064c308ccacc

Analysis

max time kernel
157s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 03:58

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General

Target

2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe
Size

69KB
MD5

ad521d1ac7929b4939062d58514cdd28
SHA1

7e841ab2488af39dff583812e82d3edf7e17e104
SHA256

c3ad8337208c5baf8f10f46bc7a370f9aaa9dac4c16409c0235a064c308ccacc
SHA512

cdea55fe3d047a48ea0382a8fdb2b374af1f51b4687464d5645311a4aabc421b201598143bd595400df836fb7af68a04ee8555a16b3543fad59ff1537f471a0c
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAe6:78SEOtEvwDpjWYvQd2Pb

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1600-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1600-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1600-3-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002328e-16.dat	CryptoLocker_rule2
behavioral2/memory/3680-29-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1600-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1600-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1600-3-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002328e-16.dat	CryptoLocker_set1
behavioral2/memory/3680-29-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1600-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1600-1-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1600-3-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000800000002328e-16.dat	UPX
behavioral2/memory/3680-29-0x0000000000500000-0x000000000050F000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3680	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1600-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1600-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1600-3-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000002328e-16.dat	upx
behavioral2/memory/3680-29-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 1600 wrote to memory of 3680	1600	2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe	94
PID 1600 wrote to memory of 3680	1600	2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe	94
PID 1600 wrote to memory of 3680	1600	2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_ad521d1ac7929b4939062d58514cdd28_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3680

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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:2244

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
69KB

MD5
5d1ebec487e40f9e31019faf528229f8

SHA1
5230df7759fe6fc0d2614f9d9c7f5c0b8734837a

SHA256
a90476c33cb77a9afce356800a2a4d3efed3a678ff40ae33662e4511f0a30b57

SHA512
f1aff92a0feeda3f2ef077733de006662a2edbf65d8216c5115c77e0d877dba72045bb5d2aff1b3d7917c79dec6ae707d09d59ee971f7c19bf399230829c16eb

Download Submit
memory/1600-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1600-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1600-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1600-3-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1600-4-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1600-5-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3680-21-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3680-27-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3680-29-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download