b2dd5d8c750dfe4c32a31c4ff2a2dece76a6792de1e66c49d206f75b44ff7b16

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 03:35

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General

Target

2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe
Size

92KB
MD5

8fd6617ac3a64dfa372efa20d7470a8f
SHA1

c7710528e101b6b225a3d079410bac99644eeb84
SHA256

b2dd5d8c750dfe4c32a31c4ff2a2dece76a6792de1e66c49d206f75b44ff7b16
SHA512

fd4e2a483465ea7368b596a3c4564d1acaf158dfde5c482686742c7757ccb798386ed776f5e2d5f667dacd8afcfd0673b6d9d6b3e8de4fb874221485e1816b9d
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgddBl:AnBdOOtEvwDpj6z3

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	2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1880	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000235a7-13.dat	upx
behavioral2/memory/4192-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1880-26-0x0000000000500000-0x000000000050F000-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	2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_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 4192 wrote to memory of 1880	4192	2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe	93
PID 4192 wrote to memory of 1880	4192	2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe	93
PID 4192 wrote to memory of 1880	4192	2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_8fd6617ac3a64dfa372efa20d7470a8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4192
- 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:1880

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=4360 /prefetch:8
1⤵
PID:3596

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

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Downloads

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

Filesize
92KB

MD5
4fa482454bd52ed7419099bb68bed831

SHA1
8892e5fd73445abb38c31cff7a51e071176a6e3c

SHA256
1aeb2f898ef7fca5181245b108175d45bcaa90a612cd6b7ecc8ed56e077d7143

SHA512
7e607b630395d4dda659357c2e192ff3556a12322230aa005e7c1a9c1fc50dd642719e6461534292ba14a2c8fac2388761135ebc3bbb094a88afd7c4ecfb4c7b

Download Submit
memory/1880-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1880-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1880-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4192-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4192-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4192-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4192-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4192-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download