00b11e3c8d093aab85f4c743d06f142477d881595af1ed2bd0cfb3275268b59c

Analysis

max time kernel
142s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 11:42

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General

Target

setup(pdfconverter).exe
Size

690KB
MD5

0a9e144d84c645b2e98a3a0da2ce3590
SHA1

c21b89ee432de1cd4563c90dd0dc1c14a031d1d1
SHA256

c1586152f1e21d8a060beae225ce4fab667ea5d18ce95b027cb3e4e6187d110a
SHA512

b9df5dc9056d25e4dd7819eff284a2c63d684e18e42a1c4998163759867b9a5dbf38e56c8a10fe1dab3d3c58ac77e0a5a589a5006b03d82daa53ddae40209d94
SSDEEP

12288:SvfyIIIzAClE7uDOch+h2ul/mJowoNG4CqvcCywZC:esSzlEqF+hVcOO4CMHyoC

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2624	irsetup.exe

Loads dropped DLL 4 IoCs

pid	Process
2360	setup(pdfconverter).exe
2624	irsetup.exe
2624	irsetup.exe
2624	irsetup.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000800000001227e-1.dat	upx
behavioral1/memory/2360-5-0x00000000022E0000-0x0000000002407000-memory.dmp	upx
behavioral1/memory/2624-6-0x0000000000400000-0x0000000000527000-memory.dmp	upx
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000527000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\pdfconverter Setup Log.txt	irsetup.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2624	irsetup.exe
2624	irsetup.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28
PID 2360 wrote to memory of 2624	2360	setup(pdfconverter).exe	28

C:\Users\Admin\AppData\Local\Temp\setup(pdfconverter).exe
"C:\Users\Admin\AppData\Local\Temp\setup(pdfconverter).exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Local\Temp\_ir_sf7_temp_0\irsetup.exe
  __IRAOFF:520716 "__IRAFN:C:\Users\Admin\AppData\Local\Temp\setup(pdfconverter).exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:2624

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

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\_ir_sf7_temp_0\irsetup.exe

Filesize
440KB

MD5
75ca7ff96bf5a316c3af2de6a412bd54

SHA1
0a093950790ff0dddff6f5f29c6b02c10997e0c5

SHA256
d95b5bf9ca97c1900de5357743282bab655d61d616606485088e1708559b7cf1

SHA512
b8da86f2f1e908955254e5168d0447f479cec7815a8b081a7b38eb87187cb2eb992109c67e006361b96bc1529ee8abc9dc477d78e9ca565e43f5415b492771d4

Download Submit
memory/2360-5-0x00000000022E0000-0x0000000002407000-memory.dmp

Filesize
1.2MB

Download
memory/2624-6-0x0000000000400000-0x0000000000527000-memory.dmp

Filesize
1.2MB

Download
memory/2624-14-0x0000000000B20000-0x0000000000C47000-memory.dmp

Filesize
1.2MB

Download
memory/2624-21-0x0000000000400000-0x0000000000527000-memory.dmp

Filesize
1.2MB

Download