4f4833677614d302a42781940f964bdb49136998ebf16c4d131addea8e07f365

Analysis

max time kernel
146s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 10:22

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General

Target

2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe
Size

69KB
MD5

edaea703ea674f7864dec7b308187faf
SHA1

e04308fd76be869873a5d3cf05ff8c25ee4ef6a7
SHA256

4f4833677614d302a42781940f964bdb49136998ebf16c4d131addea8e07f365
SHA512

5482e5474d9828faff28101d1b62c3d0bf211cb71612fffc5625291e3cfa7d833463897d7becde858aa8365ff49b47b0947226a88715d26a0cb886d69729e05e
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9N:C4Q2c94OtEvwDpj4H8zE

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3372-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_rule2
behavioral2/memory/3372-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4556-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3372-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4556-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3372-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002325a-13.dat	UPX
behavioral2/memory/3372-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4556-25-0x0000000000500000-0x0000000000510000-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	2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4556	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3372-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002325a-13.dat	upx
behavioral2/memory/3372-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4556-25-0x0000000000500000-0x0000000000510000-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 3372 wrote to memory of 4556	3372	2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe	91
PID 3372 wrote to memory of 4556	3372	2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe	91
PID 3372 wrote to memory of 4556	3372	2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_edaea703ea674f7864dec7b308187faf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3372
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4556

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=3796 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:3140

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
a5164e80a4012bd22de228887666abe6

SHA1
428b135f31d4db4b6300b0c26a2169e9d84cbc07

SHA256
4dcd8862f949c114a8e5dc73f8cdd63248c803487843efcb5fd174e4d6421d5f

SHA512
281a6fac826a82ac08fe87d9438b854becc6ca3aa65673beb5f2594ba1c895bb660bf33b7abedd8987869b2e713294bb6b595d415f1440352c5b0a766a3fdfd3

Download Submit
memory/3372-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3372-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3372-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3372-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3372-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4556-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4556-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download