ff28d280cef6a193270ce57b174f0c46b4b26d0c67da03763b2ec850bb6d53b7

Analysis

max time kernel
141s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04/10/2024, 18:41

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General

Target

2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe
Size

38KB
MD5

07c9c5385e35ac77a41962b09da70744
SHA1

be431c80578ed62dfac69c2189c35b303271d80d
SHA256

ff28d280cef6a193270ce57b174f0c46b4b26d0c67da03763b2ec850bb6d53b7
SHA512

1d9a41837d2bd3fd48bccecc0cd351400709d13e69e706cc770bd7ad12064598f4c1964d94ce3d1a5fabe8f8cc4608ed7909e480ea11ada592c67fc06a8c8e6f
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITJ:qDdFJy3QMOtEvwDpjjWMl7TJ

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2500	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2364-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2364-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d0000000141df-15.dat	upx
behavioral1/memory/2500-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2500-28-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

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	2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2500	2364	2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe	31
PID 2364 wrote to memory of 2500	2364	2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe	31
PID 2364 wrote to memory of 2500	2364	2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe	31
PID 2364 wrote to memory of 2500	2364	2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_07c9c5385e35ac77a41962b09da70744_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
2097f525a97b7c05bdda6a60cfe7fdc1

SHA1
38380cd40d83829de6d9de1feab4e835b23d9cfe

SHA256
3c4615e93a1563ec677eb00cb51a7cd9d581cf0333526f408cf66261b2bbcdd5

SHA512
2bc44953442917175802ba9e50866e0c3193d58a027a89dba174cf46948a4e5a68f5ee2c513f4b1cfdc1b716506769e4c41c577354add8b3b701cefba330e4a4

Download Submit
memory/2364-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2364-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2364-2-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2364-3-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2364-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2364-14-0x00000000004E0000-0x00000000004F0000-memory.dmp

Filesize
64KB

Download
memory/2500-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2500-21-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2500-20-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2500-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download