cff7a2085c5628ea9520e66751e9a11066b1eae2114184248d093125e0727a07

Analysis

max time kernel
147s
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
26/04/2024, 04:32

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General

Target

2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe
Size

70KB
MD5

2d5aa4b265ec5880d4d5c85386256c09
SHA1

00cfdf01f2b2703b0147f60ccec00809001043fe
SHA256

cff7a2085c5628ea9520e66751e9a11066b1eae2114184248d093125e0727a07
SHA512

f292dbcfb4a122a51fc63f76e52c4ebab3fc9088f888a17f48ae772cf05fba0826389cfb8c907fefb84694340ac46df0843f9f4e87106bb742347d1cf6eadee0
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9a:C4Q2c94OtEvwDpj4H8z3

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000e000000023157-13.dat	CryptoLocker_rule2
behavioral2/memory/2252-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4536-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2252-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4536-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000e000000023157-13.dat	UPX
behavioral2/memory/2252-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4536-26-0x0000000000500000-0x0000000000510000-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	2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4536	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000e000000023157-13.dat	upx
behavioral2/memory/2252-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4536-26-0x0000000000500000-0x0000000000510000-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 2252 wrote to memory of 4536	2252	2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe	91
PID 2252 wrote to memory of 4536	2252	2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe	91
PID 2252 wrote to memory of 4536	2252	2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_2d5aa4b265ec5880d4d5c85386256c09_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4536

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=3700 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:3464

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\misid.exe

Filesize
70KB

MD5
c9db7101b23b53fcd996fe6d5a8d9213

SHA1
3ee26d15db6598ccde139c4e55ea4075704256cd

SHA256
e37619fb871a61e023db22e3c777f1e325cbcb37782f3af6921050797c65e8e6

SHA512
c7b17958dc442a820a1b73dca5b9397ca91d4843f4996f20b24fb27331b8edd6014056f2de328977c88b8fab6d57ffe2111acd1ab74bfc0acce190a421bf40d2

Download Submit
memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2252-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2252-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2252-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2252-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4536-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4536-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4536-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download