a677b6b60eda7b43aa215608fc99bd2e8c94c72f873cb0e04f796639f08d4350

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-10-2024 05:37

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General

Target

2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe
Size

38KB
MD5

88e38f12e22f67498dd41d2dfb32db0b
SHA1

a44515121f02c0975b3565354e9963572dc9a4ab
SHA256

a677b6b60eda7b43aa215608fc99bd2e8c94c72f873cb0e04f796639f08d4350
SHA512

364a87e00a7544e6d2edf493a5bd97575ae9e1853fdd5126e5233f5a9d38dd2d02ea923a066732da5ccb85e94c3d796156277ab3996b32945d6a7ea1b2e190af
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT/:qDdFJy3QMOtEvwDpjjWMl7T/

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	2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3368	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/896-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000235a9-13.dat	upx
behavioral2/memory/896-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3368-26-0x0000000000500000-0x0000000000510000-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	2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 3368	896	2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe	89
PID 896 wrote to memory of 3368	896	2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe	89
PID 896 wrote to memory of 3368	896	2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-05_88e38f12e22f67498dd41d2dfb32db0b_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:896
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3368

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=4088,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4384 /prefetch:8
1⤵
PID:452

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\asih.exe

Filesize
38KB

MD5
db0355ac57a2627019060b9fc3e49cb3

SHA1
ddfe2e4ccb7032c98843c120ca4b151c05318f3d

SHA256
cae068e24d5e88808c951df7cf93f69cf9b34a1e1ff51d30317bd48c19b36c66

SHA512
5ee5be079de2f9a3dfc6236a026fc45da5f40c309770102674e7f40b424553bce049d8441b8a5695326901389016c03aefc95cbce0e6acbe5fc0edf68c373863

Download Submit
memory/896-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/896-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/896-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/896-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/896-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3368-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3368-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3368-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download