d10b5e45b45f43ccdc91bb7d53637402ca98e934eb294898e2241a2f40fea1f7

Analysis

max time kernel
145s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 14:11

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General

Target

2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe
Size

55KB
MD5

d3264329e9bb0a21b4b8dbbb43402578
SHA1

5e7d41c10e4b5c56ce632e988a25a8c42e75701b
SHA256

d10b5e45b45f43ccdc91bb7d53637402ca98e934eb294898e2241a2f40fea1f7
SHA512

69a7e0524e66929fab9266c4cb11baaa4fc754169b3e73191dcac6af9148272fe27d87c0ed5a44e0b79baf4c3fce53a6c61be1464b592a5ecf30b7ad2813f093
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+:bP9g/xtCS3Dxx0p

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 2 IoCs

resource	yara_rule
behavioral2/memory/1380-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023252-14.dat	CryptoLocker_rule2

UPX dump on OEP (original entry point) 2 IoCs

resource	yara_rule
behavioral2/memory/1380-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral2/files/0x0008000000023252-14.dat	UPX

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	2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.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
1484	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1380-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x0008000000023252-14.dat	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 1380 wrote to memory of 1484	1380	2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe	91
PID 1380 wrote to memory of 1484	1380	2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe	91
PID 1380 wrote to memory of 1484	1380	2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1380
- 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:1484

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=1400 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:1432

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

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Downloads

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

Filesize
56KB

MD5
e34a2d579e6ee9c2fc237c7ff46265d0

SHA1
bc2ce943a456072b82fba6037de4315c76902d3b

SHA256
926085384ec421b6d85ca3a4d52aa3f014a2ad114a926d16921166578f96bbe3

SHA512
07b21e898ce6d2d6819308f71b42ae8596bfd0d6bd8b6a19a2c715de3653df6ba7e12c6c3a9541dfc034701561e15adac5e76a1a81b1b146ff2213955f5e936b

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

Filesize
185B

MD5
da2c7beb2f70b6e08b9b6f560b6b3444

SHA1
7fb90fd90ef1e7f52fdc723b233a37462ac69d91

SHA256
ab5ac5f1ae6937c9c69b278f92b3d5f7181570c156e9cdc3daaf84fdd89cf4a6

SHA512
e0b3ce615d7aa24c938decb4fcbd74e8ff61ba1a38ea0a6c93dc17bb9add306fa99e1222b6d773ff12ccd0c7c2a297e3b289bff31f9da818c4cb720ac0e85de7

Download Submit
memory/1380-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1380-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1380-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1380-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1484-27-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download