d7022f5bde9bd07293c3605608308c340c13373404276af93b282979ea3f1424

Analysis

max time kernel
111s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 15:47

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General

Target

book-298371.exe
Size

116KB
MD5

aba53a493de62f3bbd17f14d73fcc461
SHA1

fc6f4ce93a8e18da6e58d0c8ce1c7186f4bdf352
SHA256

923bc504187aa43c28a00615b86b36255b2730142f7392f54849f91885876e6c
SHA512

bd80dba344ab807b8b40f5dfaa50856db5f9a6f4fb0c8794995e92198f25f1e76eee24dead645b7f1afe2f2258dbe0f5e2f5620586ad887f912be0d53d9e078c
SSDEEP

3072:IthOHk1wxL2Ms37bJISjhFdtxthzNV50Vo:Xk1wZ2MQuChFdf90

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Winhlp31.exe

pid process

2552 Winhlp31.exe

pid	process
2552	Winhlp31.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Winhlp31.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Winhlp31 = "C:\\Users\\Admin\\Documents\\CommonData\\Winhlp31.exe"	Winhlp31.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1828 2552 WerFault.exe Winhlp31.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

book-298371.exeWinhlp31.exe

pid process

5060 book-298371.exe
5060 book-298371.exe
2552 Winhlp31.exe
2552 Winhlp31.exe
2552 Winhlp31.exe
2552 Winhlp31.exe

pid	pid_target	process	target process
1828	2552	WerFault.exe	Winhlp31.exe

pid	process
5060	book-298371.exe
5060	book-298371.exe
2552	Winhlp31.exe
2552	Winhlp31.exe
2552	Winhlp31.exe
2552	Winhlp31.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

book-298371.exeWinhlp31.exe

description	pid	process	target process
PID 5060 wrote to memory of 2552	5060	book-298371.exe	Winhlp31.exe
PID 5060 wrote to memory of 2552	5060	book-298371.exe	Winhlp31.exe
PID 5060 wrote to memory of 2552	5060	book-298371.exe	Winhlp31.exe
PID 2552 wrote to memory of 2640	2552	Winhlp31.exe	Explorer.EXE
PID 2552 wrote to memory of 2640	2552	Winhlp31.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2640

C:\Users\Admin\AppData\Local\Temp\book-298371.exe
"C:\Users\Admin\AppData\Local\Temp\book-298371.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5060

C:\Users\Admin\Documents\CommonData\Winhlp31.exe
C:\Users\Admin\Documents\CommonData\Winhlp31.exe C:\Users\Admin\AppData\Local\Temp\book-298371.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2552 -s 1360
4⤵
- Program crash
PID:1828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2552 -ip 2552
1⤵
PID:3840

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\Documents\CommonData\Winhlp31.exe

Filesize
116KB

MD5
aba53a493de62f3bbd17f14d73fcc461

SHA1
fc6f4ce93a8e18da6e58d0c8ce1c7186f4bdf352

SHA256
923bc504187aa43c28a00615b86b36255b2730142f7392f54849f91885876e6c

SHA512
bd80dba344ab807b8b40f5dfaa50856db5f9a6f4fb0c8794995e92198f25f1e76eee24dead645b7f1afe2f2258dbe0f5e2f5620586ad887f912be0d53d9e078c

Download Submit
C:\Users\Admin\Documents\CommonData\Winhlp31.exe

Filesize
116KB

MD5
aba53a493de62f3bbd17f14d73fcc461

SHA1
fc6f4ce93a8e18da6e58d0c8ce1c7186f4bdf352

SHA256
923bc504187aa43c28a00615b86b36255b2730142f7392f54849f91885876e6c

SHA512
bd80dba344ab807b8b40f5dfaa50856db5f9a6f4fb0c8794995e92198f25f1e76eee24dead645b7f1afe2f2258dbe0f5e2f5620586ad887f912be0d53d9e078c

Download Submit
memory/2552-135-0x0000000000000000-mapping.dmp

Download
memory/2552-139-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2552-140-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2552-141-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2552-142-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5060-132-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5060-133-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5060-134-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5060-138-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download