22e172e2764c1490224578effd8bbb838157f7bc0025d0a0782addfff9f3acc0

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 18:08

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General

Target

2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe
Size

56KB
MD5

584cd1ddf903d4f24086362ec83656d9
SHA1

d0098439908b789b556085cc0fe8fd7a418e41aa
SHA256

22e172e2764c1490224578effd8bbb838157f7bc0025d0a0782addfff9f3acc0
SHA512

14472576700cbb97c1417dd423a9c40dca08fd1b32d1452c6ba7a2ad69fbe88ea048c0ac7d7e1d84dc78fbc832b38540116dc13f946dd84ad41cb8b927573270
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8puI7:bIDOw9a0DwitDZzcTLI7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\lossy.exe	CryptoLocker_rule2

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

Processes:

2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

lossy.exe

pid process

4604 lossy.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4604	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe

description	pid	process	target process
PID 224 wrote to memory of 4604	224	2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe	lossy.exe
PID 224 wrote to memory of 4604	224	2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe	lossy.exe
PID 224 wrote to memory of 4604	224	2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe	lossy.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_584cd1ddf903d4f24086362ec83656d9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:224

C:\Users\Admin\AppData\Local\Temp\lossy.exe
"C:\Users\Admin\AppData\Local\Temp\lossy.exe"
2⤵
- Executes dropped EXE
PID:4604

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 --field-trial-handle=4100,i,13544508926340531097,6671217806016090640,262144 --variations-seed-version --mojo-platform-channel-handle=4016 /prefetch:8
1⤵
PID:4972

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\lossy.exe
Filesize
56KB

MD5
8ec825abd4153082f176749e78da4c02

SHA1
0276a769aec580b832018e6d852a6b2755e9247e

SHA256
da7aeee35e3054ce58dd55e3170f600754de11719398cb3c3593e332e1268788

SHA512
faf3f440e7cc5f962eabb937c5d363b88232c3830c723c8057828cc39058c4aba921ed55c7e20f2c6b44cfb2fb9a144fe4adfdcf8867f66cac1634ddda054345

Download Submit
memory/224-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/224-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/224-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4604-18-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4604-17-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download