d353eafacd9d842b650cbd9791ce2398d90bcf5af788b2178000f58bc028b8a4

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 03:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe
Size

53KB
MD5

21d8fd5cda1e93ce6ae6675f292a3264
SHA1

d2573225ee4cc3bb0b02a81cbd8148882087ecdb
SHA256

d353eafacd9d842b650cbd9791ce2398d90bcf5af788b2178000f58bc028b8a4
SHA512

4caf6c51426ea109fe13b1d4d9d41fa9c58f0bc81f3104fdb2ef9cc427cb663535f7d0e624854a725c731263517434986781043468599e53d127ad6f472f9d13
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOXi:bODOw9acifAoc+vl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3192-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023251-13.dat	CryptoLocker_rule2
behavioral2/memory/3192-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3880-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3192-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x0008000000023251-13.dat	UPX
behavioral2/memory/3192-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/3880-26-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3880	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3192-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x0008000000023251-13.dat	upx
behavioral2/memory/3192-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3880-26-0x0000000008000000-0x000000000800F000-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 3192 wrote to memory of 3880	3192	2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe	92
PID 3192 wrote to memory of 3880	3192	2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe	92
PID 3192 wrote to memory of 3880	3192	2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_21d8fd5cda1e93ce6ae6675f292a3264_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3192
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3880

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=3744 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:3008

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\lossy.exe

Filesize
53KB

MD5
a9add7694d306a8feba2908bc6a0e1e4

SHA1
94b12340656b065c1bff446ee4eed5f2b98a5d1b

SHA256
1695b04906ab5ed0f781d508f9279d9d17b5200bf039f859ee6e2f3d5c77cf7a

SHA512
79eec0e07afd2d575a5081514b3fc7d8a6905bf79ad008b6a8282a8c5b4293c10725a804c9f8164e8882d3e52c6e034684fd6c349f1d1b675992c0a95133f836

Download Submit
memory/3192-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3192-1-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/3192-2-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/3192-3-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3192-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3880-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3880-25-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3880-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download