7456ad9f09d2bbd98d6dfc2ca5d41c4b54949a9f59e9edf5d76c5443d1c3f904

General

Target

2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe
Size

39KB
MD5

080c7a1b82d8978326a9ab0010857232
SHA1

18f328f35450ddd173e74762be94945f57fdb5ee
SHA256

7456ad9f09d2bbd98d6dfc2ca5d41c4b54949a9f59e9edf5d76c5443d1c3f904
SHA512

90825a4b83b8f85be57798031758ffab9dac4f19d281f1b5604a99e29e58814b136246714f86ce3c9d2d86c30c1aa50325919701d776e2dc66938165e561269c
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDbm:qDdFJy3QMOtEvwDpjjWMl7Tdy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023546-13.dat	CryptoLocker_rule2
behavioral2/memory/1652-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1956-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1956-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023546-13.dat	CryptoLocker_set1
behavioral2/memory/1652-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1956-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1956-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0009000000023546-13.dat	UPX
behavioral2/memory/1652-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1956-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1956-28-0x0000000000500000-0x0000000000510000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1956	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023546-13.dat	upx
behavioral2/memory/1652-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1956-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1956-28-0x0000000000500000-0x0000000000510000-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 1652 wrote to memory of 1956	1652	2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe	90
PID 1652 wrote to memory of 1956	1652	2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe	90
PID 1652 wrote to memory of 1956	1652	2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_080c7a1b82d8978326a9ab0010857232_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1956

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=4204,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4244 /prefetch:8
1⤵
PID:4472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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
39KB

MD5
76c8bb38615ba75f7490c27c8ed1d863

SHA1
41464aca10a24f96232d4ad04270e10f6a64d954

SHA256
2df1f5bb52aaf34b6582160b8aa8006345b541afac439a398fc174852204afb2

SHA512
72309db2096d7490982fb93deb55444bd17832d1d13b04ceefb6c917a3ef895e1d4003a03d001642cb81f38b60d3496679a6bd51a620c2933d645c8221d330cb

Download Submit
memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1652-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1652-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1652-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1652-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1956-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1956-22-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/1956-27-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/1956-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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