3e529dc6a92896354ad633371c5a0fc905d20f01b77ca96ec6ef13cc3a2c8a07

Analysis

max time kernel
149s
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
14-03-2024 16:36

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General

Target

2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe
Size

61KB
MD5

5457035898adde8b115a2912c633f6fe
SHA1

74c7dc22dabd0543098eb12764327951d04cbdac
SHA256

3e529dc6a92896354ad633371c5a0fc905d20f01b77ca96ec6ef13cc3a2c8a07
SHA512

4aa2a227af88288ab7fce141d20cd160e16b91ac1158b3e77d6c180f7c8a7cfc6b8d0d82d1458c9ed5172f159fec7c01e6aa4bcb273fa433d0285b3a745df399
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5aFr7YOzR80:z6QFElP6n+gKmddpMOtEvwDpj9aYaFA2

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/628-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000023152-13.dat	CryptoLocker_rule2
behavioral2/memory/628-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2100-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/628-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000d000000023152-13.dat	CryptoLocker_set1
behavioral2/memory/628-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2100-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/628-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000d000000023152-13.dat	UPX
behavioral2/memory/628-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2100-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2100	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/628-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000d000000023152-13.dat	upx
behavioral2/memory/628-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2100-26-0x0000000000500000-0x0000000000510000-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 628 wrote to memory of 2100	628	2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe	90
PID 628 wrote to memory of 2100	628	2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe	90
PID 628 wrote to memory of 2100	628	2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_5457035898adde8b115a2912c633f6fe_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2100

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\asih.exe

Filesize
61KB

MD5
fcb7146365901c4401f4025da4ccff1d

SHA1
e73fe23c691102dc297c9abc4d2a4dfc46714e35

SHA256
2e06e1150fdc064f2e8808e1becdefd6ae022ffa2770bd9414d57e6b3de3bc5a

SHA512
48fcd0926ffe9e0eb063ac565b51daeb5f0f3db8a0078fc042de32a2db2591a2f9913dea1a008b56fa21e7236e106f16d224c1ed32772b37a7ce97665db99574

Download Submit
memory/628-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/628-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/628-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/628-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/628-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2100-20-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2100-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/2100-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download