356d95c43f008afc0dd3b5f41f5e52ede4521fcd25f24f549da6c4d93c5ae791

Analysis

max time kernel
138s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 05:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe
Size

55KB
MD5

cee573bb7d20f64f1ee1ad2bb6531292
SHA1

55b99ae8673bee3e4214813da11a8a0d290a9a1b
SHA256

356d95c43f008afc0dd3b5f41f5e52ede4521fcd25f24f549da6c4d93c5ae791
SHA512

fcff899b94715118ed0a45ef76ce1a9f9466a97814332491a331a0df2040a4b3e9efd170ae1c5df1db45c462d9c1a2bbccb98d3a7ff8e7e0c4e93e3fb69aae17
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl0:bP9g/xtCS3Dxx0H

Score

7^/10

upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3484	gewos.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1108-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000900000002325f-14.dat	upx
behavioral2/memory/3484-19-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/memory/1108-21-0x0000000000400000-0x000000000040E000-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 1108 wrote to memory of 3484	1108	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	91
PID 1108 wrote to memory of 3484	1108	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	91
PID 1108 wrote to memory of 3484	1108	20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521cee573bb7d20f64f1ee1ad2bb6531292cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3484

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=4160 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:5064

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

Loading Replay Monitor...

Downloads

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

Filesize
56KB

MD5
c2286e098815debab772f61b42a1ba49

SHA1
c0372ae7d3c090d3f7e70847f9f8b2efc9d05880

SHA256
4fa9347f6deae2d8354da42cf8221ebb05048ae945fa91018dc310611045eb7a

SHA512
ed134b4d95dc4b52a62e78fd09fbc9df22f179721ab9bc2eeed2ab6f24b43c78f1a271cb4c2855323ba90d9818ea4cf949ba767c8a713906e4458b9f685165f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
8af2dfa78d45528c963bf3d86eae24d5

SHA1
0217ce62d6d1b647e1168761a1adb24a8b9e2332

SHA256
7084ada72afc6026cf2d4fb28086610037dcc91d129a3a8be6e83c9d2b268e44

SHA512
f4543076d399b2b8a7ed57e0d4687981e6aabcbe308900192bd1d7a74bcfe9ba8c512a5aa050405c7df2134f0337b04bdda6e68fa3a9d8ba063057991d531174

Download Submit
memory/1108-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1108-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1108-2-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1108-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1108-21-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3484-19-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3484-22-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download