f01f6c9803cdecfdbe7d53c500d0d7a634fb9a72a07f0ccbb2655579c0d0c199

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 12:18

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General

Target

2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe
Size

26KB
MD5

ef7d07de5eb11b17e588654cec05c3d1
SHA1

ae7bc58be55b0e8ef9393d343eec17b5b7c1082d
SHA256

f01f6c9803cdecfdbe7d53c500d0d7a634fb9a72a07f0ccbb2655579c0d0c199
SHA512

feb804c40d73d8e33164a1dddb8ad07c0dfac8cb2968ed7af2f276a521a36c48545c2f8c8840da58602a6ab6ff9c2aba838f398fa00e5a82f9be9aa4f40b6ba0
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMmHBdaKTb:bVCPwFRo6CpwXFXSqQXfjAsmHBdZX

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3524	hasfj.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1708-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x00080000000235aa-13.dat	upx
behavioral2/memory/1708-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/3524-26-0x0000000008000000-0x000000000800E000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 3524	1708	2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe	92
PID 1708 wrote to memory of 3524	1708	2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe	92
PID 1708 wrote to memory of 3524	1708	2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_ef7d07de5eb11b17e588654cec05c3d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3524

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 --field-trial-handle=4448,i,1330210614411927383,9239043499051775691,262144 --variations-seed-version --mojo-platform-channel-handle=4396 /prefetch:8
1⤵
PID:3956

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
26KB

MD5
29b6543c2ed4a3c58b5b87e44fb1eb56

SHA1
bf00c9c356a0085728f372cd1219121fd0bf056a

SHA256
4affe3795ce476b14d09237aab5c8c428e7ddf6572781183afe036446f3fb192

SHA512
015d65b45eb8d41761226de5e1962a3fe987bf26edaa2730425a5d14837f8cb6b1f1dcab967608a60ba1969f62d694309abbb26baa93b968b79ce64edbffeff0

Download Submit
memory/1708-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1708-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1708-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1708-3-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/1708-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3524-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3524-19-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3524-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download