gozi_ifsb | 4713834ea4f17e583ce824f4c2ee391cafac251d6f0d64a5234b417ac593094b

General

Target

33.dll
Size

170KB
MD5

b70bb01648a76dd8545fd12ec53b9ce7
SHA1

78a6919ffa9a86d8e85f248ce6435754b4d6f60b
SHA256

4713834ea4f17e583ce824f4c2ee391cafac251d6f0d64a5234b417ac593094b
SHA512

fe6eb27d690d3d2bd9771408588c34d6287514d6247e034e9f009ecef8f1bc41cb76ed9a42d8ab3b57cb3cfa1ec24a501b5532b27c5eba55369ed2e0dc1389e3

Score

10^/10

gozi_ifsb 3300 banker trojan

Malware Config

Extracted

Family

gozi_ifsb

Botnet

3300

C2

api10.laptok.at/api1

golang.feel500.at/api1

go.in100k.at/api1

Attributes

build
250180
exe_type
loader
server_id
730

rsa_pubkey.base64

serpent.plain

Signatures

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

Modifies Internet Explorer settings 1 TTPs 12 IoCs

adware spyware

Modify Registry

T1112

Processes:

IEXPLORE.EXEiexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{DAF55B73-8197-11EB-BEBD-7203859AD7E4} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

4288 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

4288 iexplore.exe
4288 iexplore.exe
2092 IEXPLORE.EXE
2092 IEXPLORE.EXE

pid	process
4288	iexplore.exe

pid	process
4288	iexplore.exe
4288	iexplore.exe
2092	IEXPLORE.EXE
2092	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

regsvr32.exeiexplore.exe

description	pid	process	target process
PID 4688 wrote to memory of 4796	4688	regsvr32.exe	regsvr32.exe
PID 4688 wrote to memory of 4796	4688	regsvr32.exe	regsvr32.exe
PID 4688 wrote to memory of 4796	4688	regsvr32.exe	regsvr32.exe
PID 4288 wrote to memory of 2092	4288	iexplore.exe	IEXPLORE.EXE
PID 4288 wrote to memory of 2092	4288	iexplore.exe	IEXPLORE.EXE
PID 4288 wrote to memory of 2092	4288	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\33.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4688

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\33.dll
2⤵
PID:4796

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4288

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4288 CREDAT:82945 /prefetch:2
2⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2092

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2092-5-0x0000000000000000-mapping.dmp

Download
memory/4796-2-0x0000000000000000-mapping.dmp

Download
memory/4796-3-0x00000000759C0000-0x00000000759CF000-memory.dmp

Filesize
60KB

Download
memory/4796-4-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download

Analysis

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