e8ffabd20fd1160cf4d787ac4002c936cdbccb12ebfa7f2c7fc4404bd1b11168

Analysis

max time kernel
31s
max time network
30s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
23/07/2024, 08:11

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General

Target

8c4af69c8dd61ace4c4e2d5767be14d0N.exe
Size

134KB
MD5

8c4af69c8dd61ace4c4e2d5767be14d0
SHA1

c63213840e839f632def8fbe126be5efb2ebe69a
SHA256

e8ffabd20fd1160cf4d787ac4002c936cdbccb12ebfa7f2c7fc4404bd1b11168
SHA512

bb3d247272a69478c916e503097e862f490a3f6aa81f5069655e62af031f4df8886c0c2c8580fb74216d3b3d526d0f2a91d9a9bd7a6ab58ad6d9020693f15c47
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOxt:YfU/WF6QMauSuiWNi9eNOl0007NZIOxt

Score

7^/10

persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2784	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2200	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2364-0-0x0000000001060000-0x0000000001088000-memory.dmp	upx
behavioral1/files/0x0008000000018eb8-2.dat	upx
behavioral1/memory/2364-4-0x0000000000210000-0x0000000000238000-memory.dmp	upx
behavioral1/memory/2364-7-0x0000000001060000-0x0000000001088000-memory.dmp	upx
behavioral1/memory/2200-8-0x0000000000030000-0x0000000000058000-memory.dmp	upx
behavioral1/memory/2364-9-0x0000000001060000-0x0000000001088000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	8c4af69c8dd61ace4c4e2d5767be14d0N.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2200	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	29
PID 2364 wrote to memory of 2200	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	29
PID 2364 wrote to memory of 2200	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	29
PID 2364 wrote to memory of 2200	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	29
PID 2364 wrote to memory of 2784	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	30
PID 2364 wrote to memory of 2784	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	30
PID 2364 wrote to memory of 2784	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	30
PID 2364 wrote to memory of 2784	2364	8c4af69c8dd61ace4c4e2d5767be14d0N.exe	30

C:\Users\Admin\AppData\Local\Temp\8c4af69c8dd61ace4c4e2d5767be14d0N.exe
"C:\Users\Admin\AppData\Local\Temp\8c4af69c8dd61ace4c4e2d5767be14d0N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2364
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  PID:2200
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\8c4af69c8dd61ace4c4e2d5767be14d0N.exe" >> NUL
  2⤵
  - Deletes itself
  PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
7b2bd7c2bb85bd9956404d7e69c2baea

SHA1
51ca1896f9a8e6748828e9279d033e76371fff84

SHA256
028b1c981b898c9e929c016bcd972574cfa98879f9e33e1d0ed0302fbee40567

SHA512
5b5e603bc5a4745273ca37c468c896343bbeea76d894961046c8dc5ce29f45d3b9dd70a3594bd976124add31022f8ef76a5f18ad5bf2bd85335f484987a2c1f3

Download Submit
memory/2200-8-0x0000000000030000-0x0000000000058000-memory.dmp

Filesize
160KB

Download
memory/2364-0-0x0000000001060000-0x0000000001088000-memory.dmp

Filesize
160KB

Download
memory/2364-4-0x0000000000210000-0x0000000000238000-memory.dmp

Filesize
160KB

Download
memory/2364-7-0x0000000001060000-0x0000000001088000-memory.dmp

Filesize
160KB

Download
memory/2364-9-0x0000000001060000-0x0000000001088000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads