4aed0ccf563c3c647edb11220e4ed8a5bfaffbcc1cc09d3b589d2440ccbabb4b

Analysis

max time kernel
145s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2024 06:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe
Size

71KB
MD5

7796cdf77e377d136dbefd3558bfb6c0
SHA1

0490733f0a553f6712de67f842d024b81c6a4f05
SHA256

4aed0ccf563c3c647edb11220e4ed8a5bfaffbcc1cc09d3b589d2440ccbabb4b
SHA512

7cedc84e174671e2b615b357981bc61c56b8a80f1e09504fa7eeb25f07b1c712dac566b6357a6ef456324740541a04588c430e945403466454cd1b88c4a6e616
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9G:C4Q2c94OtEvwDpj4H8z7

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3076-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3076-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023268-14.dat	CryptoLocker_rule2
behavioral2/memory/4232-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3076-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4232-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3076-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3076-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023268-14.dat	UPX
behavioral2/memory/4232-27-0x0000000000500000-0x0000000000510000-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	2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4232	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3076-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3076-10-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023268-14.dat	upx
behavioral2/memory/4232-27-0x0000000000500000-0x0000000000510000-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 3076 wrote to memory of 4232	3076	2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe	91
PID 3076 wrote to memory of 4232	3076	2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe	91
PID 3076 wrote to memory of 4232	3076	2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_7796cdf77e377d136dbefd3558bfb6c0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4232

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=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:2668

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\misid.exe

Filesize
71KB

MD5
dc5ca6ce90b175f012b4609051b8050a

SHA1
52dad83a850f1f412b1afe06efcf269606133210

SHA256
8732840162e232308ebaaf124acbf55505e0dc0e9a717094741c7e965308a8a0

SHA512
91500307df492f264958b73012aa2421841509e5a71d3e9be5606ecb76301ddcea5f23dcd6fb66425e23eb2f5535ef28e1e18fc02a66d738dc331b02d27c5578

Download Submit
memory/3076-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3076-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3076-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3076-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3076-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4232-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4232-25-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/4232-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download