gozi_ifsb | 94eb4041ca8af5add163f04110155b89d456519efc3dbbcd212c35f69168f55d

Analysis

max time kernel
157s
max time network
170s
platform
windows10-2004_x64
resource
win10v2004-20220331-en
submitted
13/04/2022, 09:03

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General

Target
request.docm
Size 579KB
Sample220413-kz4wasebc5
SHA256 94eb4041ca8af5add163f04110155b89d456519efc3dbbcd212c35f69168f55d
MD5 ce630dcea5382fca4c2cdf177ce334aa
SHA1 478fb51a1d9d9650e4db04ca1776737b0ee6f9d5
SHA512 012ddfb04dfc579b2f4edcc524552640aa6e58d0eecad0123e004c310555b47c0f690702eda5ddfeab7569c7b808325129baab8591b6353975923af0d5f87f0c
MD5 SHA1 SHA512

Score

10^/10

gozi_ifsb 7630 banker trojan

Malware Config

Extracted

Family

gozi_ifsb

Botnet

7630

nahuinado.top
linkspremium.ru
premiumlists.ru

Attributes

base_path
/drew/
build
250225
exe_type
loader
extension
.jlk
server_id
50

rsa_pubkey.plain

aes.plain

Signatures

Gozi, Gozi IFSB
Gozi ISFB is a well-known and widely distributed banking trojan.
banker trojan gozi_ifsb
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3628	r4874.tmp.exe

Loads dropped DLL 1 IoCs

pid	Process
3628	r4874.tmp.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE

Modifies Internet Explorer settings 1 TTPs 41 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "97833443"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a0bea811274fd801	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 50d6c211274fd801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{55BFFD23-BB1A-11EC-9DAB-5E4EF9D2F033} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2bdf96ee36d9544a96c6515b05c558200000000020000000000106600000001000020000000dfec0f2afdb99e1bcb836e5d89680a3d2c5b7c80c81412517978eae5a1a01588000000000e8000000002000020000000d7483d6b1688c85ef39dfdad59e26cf9425a69ea88f390f0946c3242406d890a200000008c9f34253845a40ceb5f633498bd3942d56ae8d02b767180a21e54808dfed44c400000005ccc7c2d0c5f8200725185dc8c6d9e13af6b54bd3c0d9edc182d8f10f77176bc64dbf169af38c08518bbaa08d6ad2fbb75914212a7d7dfb87aa3364d9ba83730	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2bdf96ee36d9544a96c6515b05c5582000000000200000000001066000000010000200000009a2db6fd0eea5f604b9b9aab172dd398619f4a6829b66177b58d96b6449c9159000000000e8000000002000020000000512abd2162a319083dfb521a2ff2ee3ad02bd5e169456c3f7a9185a2512d047020000000c08e730ca7c9aa4ea18aa4b926ca475ad311af26ac7420df58434c7303a4fc914000000014fbf4923d48c0641a90212aaceb92965d1737cb41e1ae0993753577282dce8effd5b8227040c76749c30aab70063cae09048d84b9b8d3a8b3972f00c833c8ce	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 50cb8518274fd801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{2CE22D66-BB1A-11EC-9DAB-5E4EF9D2F033} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2bdf96ee36d9544a96c6515b05c55820000000002000000000010660000000100002000000012cd901ea8101e47e1171c3c2544eee85877b8fd13099a24e18828c3a0e61c17000000000e8000000002000020000000bcbfabf97238583a4cac5e97922b7b31b85d95ae710527041d33f7a9906c254720000000fe8cb4ed4acc7751852b0558bc57ee2d3673ed7880f39d412b378cbcf801ed1940000000a4efc9b462e130f568c82ed7b10c07c89c162f0dc6e1c2162d30eae9df773e66d624b862aebc756c754ab2d6f93a77e4881c1082a8903138f04796d317122826	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "97833443"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30953255"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30953255"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1700	WINWORD.EXE
1700	WINWORD.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3360	iexplore.exe
1436	iexplore.exe

Suspicious use of SetWindowsHookEx 15 IoCs

pid	Process
1700	WINWORD.EXE
1700	WINWORD.EXE
1700	WINWORD.EXE
1700	WINWORD.EXE
1700	WINWORD.EXE
1700	WINWORD.EXE
1700	WINWORD.EXE
3360	iexplore.exe
3360	iexplore.exe
1196	IEXPLORE.EXE
1196	IEXPLORE.EXE
1436	iexplore.exe
1436	iexplore.exe
1712	IEXPLORE.EXE
1712	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 3628	1700	WINWORD.EXE	84
PID 1700 wrote to memory of 3628	1700	WINWORD.EXE	84
PID 1700 wrote to memory of 3628	1700	WINWORD.EXE	84
PID 3360 wrote to memory of 1196	3360	iexplore.exe	95
PID 3360 wrote to memory of 1196	3360	iexplore.exe	95
PID 3360 wrote to memory of 1196	3360	iexplore.exe	95
PID 1436 wrote to memory of 1712	1436	iexplore.exe	105
PID 1436 wrote to memory of 1712	1436	iexplore.exe	105
PID 1436 wrote to memory of 1712	1436	iexplore.exe	105

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\request.docm" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\Temp\r4874.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\r4874.tmp.exe" "C:\Users\Admin\AppData\Local\Temp\y3DF3.tmp.dll",DllRegisterServer
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3628

C:\Program Files (x86)\Internet Explorer\ielowutil.exe
"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
1⤵
PID:2084

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:3360
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3360 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1196

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:1436
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1436 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1712

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

r4874.tmp.exe

Path C:\Users\Admin\AppData\Local\Temp\r4874.tmp.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
MD5 SHA1 SHA512 SSDEEP

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r4874.tmp.exe

Path C:\Users\Admin\AppData\Local\Temp\r4874.tmp.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
MD5 SHA1 SHA512 SSDEEP

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y3DF3.tmp.dll

Path C:\Users\Admin\AppData\Local\Temp\y3DF3.tmp.dll
Size 336KB
SHA256 29e8bf78ac6bfd95c21e2cbb06a0a9d8088fe9e759673c81eeadd96d681b73ed
MD5 5e3bf7458c6d8e6e880db72fcdf61f3a
SHA1 dbe5b4db4b61702f523b86be1d73b742b8d120eb
SHA512 e752eb1afda0d507b3239eb159fd4d515b73193266f494047262cb0df73ea4ccf83a597efd0d3fefea0c992e0210a48123f0b520a0802ec8fe627872336e53d8
SSDEEP 6144:3VYe1K4PEIBn308Yw0PY6xLBhN4b8H/I9TS4a+KqKwnhVyCTs:ies4c0E8f09Dm4QB1KdwhVyCTs
MD5 SHA1 SHA512 SSDEEP

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y3DF3.tmp.dll

Path C:\Users\Admin\AppData\Local\Temp\y3DF3.tmp.dll
Size 336KB
SHA256 29e8bf78ac6bfd95c21e2cbb06a0a9d8088fe9e759673c81eeadd96d681b73ed
MD5 5e3bf7458c6d8e6e880db72fcdf61f3a
SHA1 dbe5b4db4b61702f523b86be1d73b742b8d120eb
SHA512 e752eb1afda0d507b3239eb159fd4d515b73193266f494047262cb0df73ea4ccf83a597efd0d3fefea0c992e0210a48123f0b520a0802ec8fe627872336e53d8
SSDEEP 6144:3VYe1K4PEIBn308Yw0PY6xLBhN4b8H/I9TS4a+KqKwnhVyCTs:ies4c0E8f09Dm4QB1KdwhVyCTs
MD5 SHA1 SHA512 SSDEEP

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memory/1700-127-0x00007FFA75E70000-0x00007FFA75E80000-memory.dmp

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memory/1700-129-0x000001A1B73B6000-0x000001A1B7430000-memory.dmp

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memory/1700-130-0x000001A1BB390000-0x000001A1BB3D0000-memory.dmp

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memory/1700-128-0x00007FFA75E70000-0x00007FFA75E80000-memory.dmp

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memory/1700-124-0x00007FFA75E70000-0x00007FFA75E80000-memory.dmp

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memory/1700-126-0x00007FFA75E70000-0x00007FFA75E80000-memory.dmp

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memory/1700-125-0x00007FFA75E70000-0x00007FFA75E80000-memory.dmp

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memory/3628-136-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/3628-138-0x00000000011C0000-0x00000000011C6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads