95150e8d67d981c228efabb4d401e638910b8e4707399d4fb652b4b7577ebc0b

Analysis

max time kernel
142s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 03:39

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General

Target

2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe
Size

62KB
MD5

5490f98ab20501a7147e410675f52f7f
SHA1

c795fdb5861377f726928b426b2b55edd4118011
SHA256

95150e8d67d981c228efabb4d401e638910b8e4707399d4fb652b4b7577ebc0b
SHA512

b6e2fac851911cff96c35e6c1f109fecc47fbd4707545154d15d4bbaeb0a3fb2e9badc62ee9f3ffcd944916478b1b51220357648cdc24b9f8bdfae95a72fb6a6
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHNMh73O:1nK6a+qdOOtEvwDpjjO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002326d-13.dat	CryptoLocker_rule2
behavioral2/memory/372-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1768-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002326d-13.dat	CryptoLocker_set1
behavioral2/memory/372-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/1768-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x000900000002326d-13.dat	UPX
behavioral2/memory/372-25-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/1768-26-0x0000000000500000-0x000000000050F311-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	2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1768	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000900000002326d-13.dat	upx
behavioral2/memory/372-25-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/1768-26-0x0000000000500000-0x000000000050F311-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 372 wrote to memory of 1768	372	2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe	91
PID 372 wrote to memory of 1768	372	2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe	91
PID 372 wrote to memory of 1768	372	2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_5490f98ab20501a7147e410675f52f7f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1768

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=4156 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:2080

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
62KB

MD5
bd7e658426c45589a5d931d918704e8c

SHA1
7106eacb0cf4d165bc569ff0c28819c41160e533

SHA256
790378f4b212a070da3f30387452e627b53abd653a05a80bee3b6da5f49b5610

SHA512
2b23b78f93ba00f02aadd411aba30a54e6ac6f6578f55b701ccf8b1acb4f30cfdb961cf7cb0062a79ed6c3c9d8bdcf9461a4b93ce5eb844a6163dc682d2440f0

Download Submit
memory/372-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/372-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/372-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/372-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/372-25-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1768-18-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1768-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1768-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download