gozi_ifsb | 89816b893e66ff5eb9a42c14a2223e451e178c944438365ccecc9a8d1d64e6e8

General

Target

ordain.06.21.2021.doc
Size

49KB
MD5

13731c9cb360c300137bcb1779267f41
SHA1

cf816dc25baf65c92550452e3abe7f871af7f55a
SHA256

89816b893e66ff5eb9a42c14a2223e451e178c944438365ccecc9a8d1d64e6e8
SHA512

819e65feef603801ef28fd17a986085df277e5cb36c701a2471c00a4714ce51e376f4644ff9c264222bd35ec7192d4f62675673570a8633e330d337b921c1756

Score

10^/10

gozi_ifsb 6000 banker trojan

Malware Config

Extracted

Family

gozi_ifsb

Botnet

6000

C2

authd.feronok.com

app.bighomegl.at

Attributes

build
250204
exe_type
loader
server_id
580

rsa_pubkey.base64

serpent.plain

Signatures

Gozi, Gozi IFSB
Gozi ISFB is a well-known and widely distributed banking trojan.
banker trojan gozi_ifsb

Process spawned unexpected child process 1 IoCs

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

Processes:

explorer.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process	820	792	explorer.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

6 276 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

948 regsvr32.exe
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Office loads VBA resources, possible macro or embedded object present

flow	pid	process
6	276	mshta.exe

pid	process
948	regsvr32.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXEmshta.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

792 WINWORD.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

WINWORD.EXE

pid	process
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE
792	WINWORD.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

WINWORD.EXEexplorer.exemshta.exe

description	pid	process	target process
PID 792 wrote to memory of 820	792	WINWORD.EXE	explorer.exe
PID 792 wrote to memory of 820	792	WINWORD.EXE	explorer.exe
PID 792 wrote to memory of 820	792	WINWORD.EXE	explorer.exe
PID 792 wrote to memory of 820	792	WINWORD.EXE	explorer.exe
PID 836 wrote to memory of 276	836	explorer.exe	mshta.exe
PID 836 wrote to memory of 276	836	explorer.exe	mshta.exe
PID 836 wrote to memory of 276	836	explorer.exe	mshta.exe
PID 836 wrote to memory of 276	836	explorer.exe	mshta.exe
PID 792 wrote to memory of 1000	792	WINWORD.EXE	splwow64.exe
PID 792 wrote to memory of 1000	792	WINWORD.EXE	splwow64.exe
PID 792 wrote to memory of 1000	792	WINWORD.EXE	splwow64.exe
PID 792 wrote to memory of 1000	792	WINWORD.EXE	splwow64.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe
PID 276 wrote to memory of 948	276	mshta.exe	regsvr32.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\ordain.06.21.2021.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:792

C:\Windows\SysWOW64\explorer.exe
explorer c:\programdata\memoryCurrencyTable.hta
2⤵
- Process spawned unexpected child process
PID:820

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1000

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:836

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\ProgramData\memoryCurrencyTable.hta"
2⤵
- Blocklisted process makes network request
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:276

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" c:\users\public\memoryCurrencyTable.jpg
3⤵
- Loads dropped DLL
PID:948

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\memoryCurrencyTable.hta
MD5
c13c6a2a4422d7f7122277317c172ead

SHA1
ccc044e0e5771e4962bcee4339ac35571644f886

SHA256
5deccd97c3d07d1a7243b42c5a841fe1fe23f9295dd5e19ba81f33867d0a848c

SHA512
e4595df0a2ae52cf41c7655956371357b5174f4afba40c9f07e0e9196062061653eb98d7dca34ce28affeca18addf13d55affcec7bde9599979b91b28d501d3e

Download Submit
\??\c:\users\public\memoryCurrencyTable.jpg
MD5
79c48d1bb51793cff43f607662fad05e

SHA1
b52e8a5486d6d83e57b5f0346ff1530d96b4a263

SHA256
2d50c6c2308b478ec2eeef4ddac027f5bf3a90ba9b8b689e74249e0e0ef21a4c

SHA512
6360de3f7226646c62e1cb7f19e9b110d2b46f8ee115afb52b14721cf53e98632cbe5b6ac794cbe8756008016e4205af49b97b9dcdb22a14cf1162e0733f0c41

Download Submit
\Users\Public\memoryCurrencyTable.jpg
MD5
79c48d1bb51793cff43f607662fad05e

SHA1
b52e8a5486d6d83e57b5f0346ff1530d96b4a263

SHA256
2d50c6c2308b478ec2eeef4ddac027f5bf3a90ba9b8b689e74249e0e0ef21a4c

SHA512
6360de3f7226646c62e1cb7f19e9b110d2b46f8ee115afb52b14721cf53e98632cbe5b6ac794cbe8756008016e4205af49b97b9dcdb22a14cf1162e0733f0c41

Download Submit
memory/276-68-0x0000000000000000-mapping.dmp

Download
memory/792-60-0x0000000072071000-0x0000000072074000-memory.dmp

Filesize
12KB

Download
memory/792-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/792-61-0x000000006FAF1000-0x000000006FAF3000-memory.dmp

Filesize
8KB

Download
memory/820-64-0x0000000075041000-0x0000000075043000-memory.dmp

Filesize
8KB

Download
memory/820-65-0x000000006A951000-0x000000006A953000-memory.dmp

Filesize
8KB

Download
memory/820-63-0x0000000000000000-mapping.dmp

Download
memory/836-66-0x000007FEFB561000-0x000007FEFB563000-memory.dmp

Filesize
8KB

Download
memory/948-71-0x0000000000000000-mapping.dmp

Download
memory/948-76-0x000000006A880000-0x000000006A96A000-memory.dmp

Filesize
936KB

Download
memory/948-75-0x000000006A880000-0x000000006A88D000-memory.dmp

Filesize
52KB

Download
memory/948-77-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1000-69-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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