gozi_ifsb | b794fe749ab133b1a4197cd713c0d8e70723058e5c2d3df57b553475c12e42a8

General

Target

enjoin-06.21.doc
Size

49KB
MD5

68f3731796cce6ce450d1b9e05093b2a
SHA1

9ccac54605eb3b0aa365cb359f6c71cb0a912fb8
SHA256

b794fe749ab133b1a4197cd713c0d8e70723058e5c2d3df57b553475c12e42a8
SHA512

ebd6e06b28ccb3a03d463da8d343a79ba31fc0b30424be972a520f5352561ddc4121f0a81744c30b80fb2c18660078c0ea72f0b22303ce2b7c68614c0124592b

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	1576	1072	explorer.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

6 1480 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

284 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	1480	mshta.exe

pid	process
284	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 (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1072 WINWORD.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

WINWORD.EXE

pid	process
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

WINWORD.EXEexplorer.exemshta.exe

description	pid	process	target process
PID 1072 wrote to memory of 1576	1072	WINWORD.EXE	explorer.exe
PID 1072 wrote to memory of 1576	1072	WINWORD.EXE	explorer.exe
PID 1072 wrote to memory of 1576	1072	WINWORD.EXE	explorer.exe
PID 1072 wrote to memory of 1576	1072	WINWORD.EXE	explorer.exe
PID 652 wrote to memory of 1480	652	explorer.exe	mshta.exe
PID 652 wrote to memory of 1480	652	explorer.exe	mshta.exe
PID 652 wrote to memory of 1480	652	explorer.exe	mshta.exe
PID 652 wrote to memory of 1480	652	explorer.exe	mshta.exe
PID 1072 wrote to memory of 1092	1072	WINWORD.EXE	splwow64.exe
PID 1072 wrote to memory of 1092	1072	WINWORD.EXE	splwow64.exe
PID 1072 wrote to memory of 1092	1072	WINWORD.EXE	splwow64.exe
PID 1072 wrote to memory of 1092	1072	WINWORD.EXE	splwow64.exe
PID 1480 wrote to memory of 284	1480	mshta.exe	regsvr32.exe
PID 1480 wrote to memory of 284	1480	mshta.exe	regsvr32.exe
PID 1480 wrote to memory of 284	1480	mshta.exe	regsvr32.exe
PID 1480 wrote to memory of 284	1480	mshta.exe	regsvr32.exe
PID 1480 wrote to memory of 284	1480	mshta.exe	regsvr32.exe
PID 1480 wrote to memory of 284	1480	mshta.exe	regsvr32.exe
PID 1480 wrote to memory of 284	1480	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\enjoin-06.21.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1072

\??\c:\windows\explorer.exe
c:\\windows\\explorer c:\programdata\globalCounter.hta
2⤵
- Process spawned unexpected child process
PID:1576

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1092

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\ProgramData\globalCounter.hta"
2⤵
- Blocklisted process makes network request
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1480

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" c:\users\public\globalCounter.jpg
3⤵
- Loads dropped DLL
PID:284

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\globalCounter.hta
MD5
a10cc5c493b3ebc1f075424e146e92f0

SHA1
1ccaa12aae57ee57c36db36d5eb315373bcadb6c

SHA256
3b5b0403702eb792bae7f736afdfb7474d83a1ee471c334e9988926d3cf420ae

SHA512
148c03979dedb4b24ca88dad4b0d4d7ea6409febd34921044fa37be016632bb0267c737ef2b0d3da317010f0a868ced277ec632868cd8810fdc80646260adcdd

Download Submit
\??\c:\users\public\globalCounter.jpg
MD5
e630fe97d30fe1462fb891d52e11cbb8

SHA1
6287e061b247b7c9ae3c62d4ffdcbd042495ab82

SHA256
7f9fa29fe79ef52e550c48e9c6729a92b0f58575b67c65825259300092e05e8f

SHA512
eb3b950019b78b973adee41deedd9d6d044ddc4b435da10e9d60e2353bb9c82cdd4cfadf504a695f69f378fc89d023eb1f93948ec0b0e86ea62fbbc67f7ef998

Download Submit
\Users\Public\globalCounter.jpg
MD5
e630fe97d30fe1462fb891d52e11cbb8

SHA1
6287e061b247b7c9ae3c62d4ffdcbd042495ab82

SHA256
7f9fa29fe79ef52e550c48e9c6729a92b0f58575b67c65825259300092e05e8f

SHA512
eb3b950019b78b973adee41deedd9d6d044ddc4b435da10e9d60e2353bb9c82cdd4cfadf504a695f69f378fc89d023eb1f93948ec0b0e86ea62fbbc67f7ef998

Download Submit
memory/284-75-0x0000000067C60000-0x0000000067D0F000-memory.dmp

Filesize
700KB

Download
memory/284-76-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/284-74-0x0000000067C60000-0x0000000067C6D000-memory.dmp

Filesize
52KB

Download
memory/284-70-0x0000000000000000-mapping.dmp

Download
memory/1072-60-0x0000000070321000-0x0000000070323000-memory.dmp

Filesize
8KB

Download
memory/1072-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1072-77-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1072-59-0x00000000728A1000-0x00000000728A4000-memory.dmp

Filesize
12KB

Download
memory/1092-67-0x0000000000000000-mapping.dmp

Download
memory/1480-68-0x00000000752F1000-0x00000000752F3000-memory.dmp

Filesize
8KB

Download
memory/1480-66-0x0000000000000000-mapping.dmp

Download
memory/1576-63-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp

Filesize
8KB

Download
memory/1576-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads