gozi_rm3 | 8162e0799dc6887d63119af7836399684041e981d8e1cc48d0bf852dc785d8ce

General

Target

book-AUY70-04022021.xls
Size

139KB
MD5

6bc6146cc33968b9b1f1ea29a65f28aa
SHA1

e681ce7f9b6a16c9926817c18365ba3610366da4
SHA256

8162e0799dc6887d63119af7836399684041e981d8e1cc48d0bf852dc785d8ce
SHA512

0e8fe206306c1fa2f5f27a9df172d8c8f6667eb67cb2ac58a0e9d2c928ba3725d1d3c857449a66b1f1f6154a8240a4234b95a61fd451a17c41dbe077874f5fa1

Score

10^/10

gozi_rm3 201193207 banker trojan

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://uidacrtsppxece.com/ioir.png

Extracted

Family

gozi_rm3

Botnet

201193207

C2

https://topitophug.xyz

Attributes

build
300932
exe_type
loader

rsa_pubkey.base64

serpent.plain

Signatures

Gozi RM3
A heavily modified version of Gozi using RM3 loader.
banker trojan gozi_rm3

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	704	2008	rundll32.exe	EXCEL.EXE

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

704 rundll32.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

pid	process
704	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2008 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

2008 EXCEL.EXE
2008 EXCEL.EXE
2008 EXCEL.EXE

pid	process
2008	EXCEL.EXE

pid	process
2008	EXCEL.EXE
2008	EXCEL.EXE
2008	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe
PID 2008 wrote to memory of 704	2008	EXCEL.EXE	rundll32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\book-AUY70-04022021.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2008

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\nuewi\neiq.auw,DllRegisterServer
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:704

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\nuewi\neiq.auw
MD5
d31c0491f522d6b9f2102109bd2420af

SHA1
dc1cccf0e43ec5a68326ae4faf1a8cbc5ac00708

SHA256
f7c79c0c3feb7c0032424f5f6a9bcdf78d1815ee53f807cc192c2c1f8f21270f

SHA512
48d659660654800da4eb3909a06572dfcf5f05ebdfb8629fafdfeab601673e3377d9a3a241f4bd36c3f4f912ac838dbc73926f734bfa8a76ec43fa726b28c3bd

Download Submit
\nuewi\neiq.auw
MD5
d31c0491f522d6b9f2102109bd2420af

SHA1
dc1cccf0e43ec5a68326ae4faf1a8cbc5ac00708

SHA256
f7c79c0c3feb7c0032424f5f6a9bcdf78d1815ee53f807cc192c2c1f8f21270f

SHA512
48d659660654800da4eb3909a06572dfcf5f05ebdfb8629fafdfeab601673e3377d9a3a241f4bd36c3f4f912ac838dbc73926f734bfa8a76ec43fa726b28c3bd

Download Submit
memory/704-6-0x0000000000000000-mapping.dmp

Download
memory/704-7-0x0000000076641000-0x0000000076643000-memory.dmp

Filesize
8KB

Download
memory/704-11-0x00000000001F0000-0x00000000001FE000-memory.dmp

Filesize
56KB

Download
memory/704-10-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/704-12-0x0000000000350000-0x0000000000360000-memory.dmp

Filesize
64KB

Download
memory/704-13-0x0000000000490000-0x00000000004A2000-memory.dmp

Filesize
72KB

Download
memory/1616-5-0x000007FEF6850000-0x000007FEF6ACA000-memory.dmp

Filesize
2.5MB

Download
memory/2008-2-0x000000002FAB1000-0x000000002FAB4000-memory.dmp

Filesize
12KB

Download
memory/2008-3-0x00000000719D1000-0x00000000719D3000-memory.dmp

Filesize
8KB

Download
memory/2008-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads