819d37ab55f86b9a9617bdcb7b7d65601db4b5e2ef098f02a75bb35697fb89c0

Analysis

max time kernel
141s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 06:24

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General

Target

2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe
Size

89KB
MD5

3f9d46a91a9070f21da1b2fd9ef76597
SHA1

a6b7be26a6baecbdd7e300027467688b4151671f
SHA256

819d37ab55f86b9a9617bdcb7b7d65601db4b5e2ef098f02a75bb35697fb89c0
SHA512

aedffdf0f0f67bb00c01800969213942c6478550bd367939c8a2f074adc895f9dc9a7833a89cb50bc3524dff804dd08390a972de30722deef4b3a20a91615630
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpo:AnBdOOtEvwDpj6zr

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
880	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1628	2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1628-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000f0000000139a5-11.dat	upx
behavioral1/memory/880-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1628-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/880-29-0x0000000000500000-0x000000000050F000-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	2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_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 1628 wrote to memory of 880	1628	2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe	31
PID 1628 wrote to memory of 880	1628	2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe	31
PID 1628 wrote to memory of 880	1628	2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe	31
PID 1628 wrote to memory of 880	1628	2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_3f9d46a91a9070f21da1b2fd9ef76597_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628
- 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:880

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\asih.exe

Filesize
90KB

MD5
0d64c2cb300edbffe28d2126f9ee8ecf

SHA1
bb267cac444153d9cd5b92f1dab1626fc6b13f54

SHA256
9e02368255520a12e7b35bee943a12032fd9d892e067a1b2f370d4b47a2f0f02

SHA512
81ffd330066652c4ee08ff925cbb768bfe402e488acc431966ad000543ae792287d20a4d5e7a2e77a3fdb90ddd0efdb73b07e640423f59d8072ee224ad2f7b0b

Download Submit
memory/880-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/880-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/880-21-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/880-29-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1628-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1628-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1628-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1628-3-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/1628-17-0x0000000002270000-0x000000000227F000-memory.dmp

Filesize
60KB

Download
memory/1628-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1628-28-0x0000000002270000-0x000000000227F000-memory.dmp

Filesize
60KB

Download