2fe3e27abd496b4bc17b537dc67a001e5197396a542013f4905fe34e70ea69ee

Analysis

max time kernel
133s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-11-2024 17:44

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General

Target

2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe
Size

111KB
MD5

2fcb92aaa1ea8b61524f235138cc93ab
SHA1

9bf4badb571c0a013e561839446f92100c39a5da
SHA256

2fe3e27abd496b4bc17b537dc67a001e5197396a542013f4905fe34e70ea69ee
SHA512

119b1a3bde3db7f8d09955310b316bfa33f230259ff9f50d58e1615ea3f7934401274f3d69cca2d2e50e479cbf98e620cfbc3ea34c655a908e6283f749d411d6
SSDEEP

1536:76QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwMgm:76a+CdOOtEvwDpjcz6

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2400 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe

pid process

2548 2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe

pid	process
2400	asih.exe

pid	process
2548	2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2548-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2548-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2400-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2400-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

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

Processes:

asih.exe2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe

description	pid	process	target process
PID 2548 wrote to memory of 2400	2548	2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe	asih.exe
PID 2548 wrote to memory of 2400	2548	2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe	asih.exe
PID 2548 wrote to memory of 2400	2548	2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe	asih.exe
PID 2548 wrote to memory of 2400	2548	2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-01_2fcb92aaa1ea8b61524f235138cc93ab_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548

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:2400

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

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Downloads

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

Filesize
111KB

MD5
6df57136bd735fb7df8ff90c4ceb899d

SHA1
6d5b6a03bb51fe12e7709e1542caa721730969b4

SHA256
14fdd86e11b3fae60cdc14bc59a2781a4143c89a117fe89409c10804845014e4

SHA512
d44570de32ea6910aee88d24c0211376bc3449829f028a8b0105d067e732de53f635f72e345ca92638835bb875032d0b88b657a5e90484c4cc52829e566a87fb

Download Submit
memory/2400-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2400-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2400-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2548-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2548-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2548-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download