7140ced2ed7a8b9c78747664295c547bb00379a1ef92cb4b389cf74065bd02fe

Analysis

max time kernel
144s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 05:30

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General

Target

payment_advice.pdf.exe
Size

488KB
MD5

b1a75a6271ebfc3b672d0a81554a8cb6
SHA1

e2d8af8ad37f39525d3a9c2b3e76761fa708e58e
SHA256

744e507d743c9e8a041276c397fd996f5b395ffe03b3ae2c2e8abf2e873eeb10
SHA512

5b65a743198c0aa81ee2f3b7168d506ac88ca8c0a88673d2531602ad48fe65481578657333b0dadf0682ef8be56b44d08ab2633a6bb8cb9c55be1d3d18665be6
SSDEEP

12288:hGzEt2rIG4OUv310EviKF8zm/QF5h7OeLp0:hGz54fN0CYT1fp0

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
3912	payment_advice.pdf.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
29	drive.google.com
30	drive.google.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\rekinole.Pre	payment_advice.pdf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3912	payment_advice.pdf.exe
68	payment_advice.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3912 set thread context of 68	3912	payment_advice.pdf.exe	92

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3912	payment_advice.pdf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 68	3912	payment_advice.pdf.exe	92
PID 3912 wrote to memory of 68	3912	payment_advice.pdf.exe	92
PID 3912 wrote to memory of 68	3912	payment_advice.pdf.exe	92
PID 3912 wrote to memory of 68	3912	payment_advice.pdf.exe	92
PID 3912 wrote to memory of 68	3912	payment_advice.pdf.exe	92

C:\Users\Admin\AppData\Local\Temp\payment_advice.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\payment_advice.pdf.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Users\Admin\AppData\Local\Temp\payment_advice.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\payment_advice.pdf.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:68

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsa3A99.tmp\System.dll

Filesize
12KB

MD5
4add245d4ba34b04f213409bfe504c07

SHA1
ef756d6581d70e87d58cc4982e3f4d18e0ea5b09

SHA256
9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706

SHA512
1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

Download Submit
memory/68-17-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/68-18-0x0000000077528000-0x0000000077529000-memory.dmp

Filesize
4KB

Download
memory/68-19-0x0000000077545000-0x0000000077546000-memory.dmp

Filesize
4KB

Download
memory/68-32-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/68-34-0x00000000774A1000-0x00000000775C1000-memory.dmp

Filesize
1.1MB

Download
memory/3912-15-0x00000000774A1000-0x00000000775C1000-memory.dmp

Filesize
1.1MB

Download
memory/3912-16-0x0000000074300000-0x0000000074307000-memory.dmp

Filesize
28KB

Download