955b2e55fdae11bc1557c376a67e5b61033713298affbd550a568c93ecfddecd

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/10/2024, 03:29

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General

Target

2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe
Size

26KB
MD5

27a45887bb55291fec9544cd8078e510
SHA1

2b49cea04515e6d527cd97ae8e3616d61fe3632c
SHA256

955b2e55fdae11bc1557c376a67e5b61033713298affbd550a568c93ecfddecd
SHA512

1b94a9fc8d6556eab9f134121fbb982f089b4d14acd3e4666cee9471de84937e1776e386eb93fc973ed59e17441657c4666880a645e36d25832c2dcf55594227
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMmHBdat:bVCPwFRo6CpwXFXSqQXfjAsmHBdE

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2908	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2156	2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2156-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x000b000000012266-11.dat	upx
behavioral1/memory/2908-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2156-15-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2908-26-0x0000000008000000-0x000000000800E000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hasfj.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2908	2156	2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe	30
PID 2156 wrote to memory of 2908	2156	2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe	30
PID 2156 wrote to memory of 2908	2156	2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe	30
PID 2156 wrote to memory of 2908	2156	2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-05_27a45887bb55291fec9544cd8078e510_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
26KB

MD5
f62a8b5415a68b418a5c00bdd7d42089

SHA1
412de1a4e650576602c66cd652a7ea307f70cfa4

SHA256
2f2f9ede7391cde576b4c35a3f4791825fb0831ca3529b83163e3559c3dc9ce3

SHA512
d9a0580c75112d44c71483a3f709ac71ffe6725580692bfe3450d80249a6c0216fee0caa8ade9031bf07871f7cddcfccb5e88d17af905cb00615c9edd40fd34f

Download Submit
memory/2156-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2156-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2156-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2156-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2156-15-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2908-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2908-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download