gozi_ifsb | 056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5

Analysis

max time kernel
600s
max time network
496s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
26/10/2022, 23:52

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General

Target
056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe
Size 350KB
Sample221026-3wytzsaag5
SHA256 056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5
MD5 3f65f241981377c60c4f96e43f2925c3
SHA1 6f11358676bc96c1062858739904f955996906f4
SHA512 a02f051946afddd0034db22539f73d5639a8e57f0c5c19fa355f1e198691f83fc7df95c208c4330838a84265b5aaba6eac72f698e6307455d8561f621b6d005d
SSDEEP 6144:n5gNwmDoctwXekY4no0zbbRzpBwmZm+72dCMKB7QNk3VcXaO:kknXekNoYJzLids7Ak3VEN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gozi_ifsb 1000 banker persistence trojan

Malware Config

Extracted

Family

gozi_ifsb

Botnet

1000

Attributes

exe_type
worker
server_id
12

rsa_pubkey.plain

serpent.plain

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4952	Authbk32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bitssvcs = "C:\\Users\\Admin\\AppData\\Roaming\\AppVider\\Authbk32.exe"	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 4952 set thread context of 2388	4952	Authbk32.exe	89
PID 2388 set thread context of 3092	2388	svchost.exe	48
PID 3092 set thread context of 3576	3092	Explorer.EXE	22
PID 3092 set thread context of 3820	3092	Explorer.EXE	46
PID 3092 set thread context of 4832	3092	Explorer.EXE	43
PID 3092 set thread context of 3944	3092	Explorer.EXE	82

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	Authbk32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	Authbk32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4952	Authbk32.exe
4952	Authbk32.exe
3092	Explorer.EXE
3092	Explorer.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3092	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4952	Authbk32.exe
2388	svchost.exe
3092	Explorer.EXE
3092	Explorer.EXE
3092	Explorer.EXE
3092	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3576	RuntimeBroker.exe
Token: SeShutdownPrivilege	3576	RuntimeBroker.exe
Token: SeShutdownPrivilege	3092	Explorer.EXE
Token: SeCreatePagefilePrivilege	3092	Explorer.EXE
Token: SeShutdownPrivilege	3092	Explorer.EXE
Token: SeCreatePagefilePrivilege	3092	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3092	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3092	Explorer.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 4880	2536	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe	83
PID 2536 wrote to memory of 4880	2536	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe	83
PID 2536 wrote to memory of 4880	2536	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe	83
PID 4880 wrote to memory of 4292	4880	cmd.exe	85
PID 4880 wrote to memory of 4292	4880	cmd.exe	85
PID 4880 wrote to memory of 4292	4880	cmd.exe	85
PID 4292 wrote to memory of 4952	4292	cmd.exe	86
PID 4292 wrote to memory of 4952	4292	cmd.exe	86
PID 4292 wrote to memory of 4952	4292	cmd.exe	86
PID 4952 wrote to memory of 2388	4952	Authbk32.exe	89
PID 4952 wrote to memory of 2388	4952	Authbk32.exe	89
PID 4952 wrote to memory of 2388	4952	Authbk32.exe	89
PID 4952 wrote to memory of 2388	4952	Authbk32.exe	89
PID 4952 wrote to memory of 2388	4952	Authbk32.exe	89
PID 2388 wrote to memory of 3092	2388	svchost.exe	48
PID 2388 wrote to memory of 3092	2388	svchost.exe	48
PID 2388 wrote to memory of 3092	2388	svchost.exe	48
PID 3092 wrote to memory of 3576	3092	Explorer.EXE	22
PID 3092 wrote to memory of 3576	3092	Explorer.EXE	22
PID 3092 wrote to memory of 3576	3092	Explorer.EXE	22
PID 3092 wrote to memory of 3820	3092	Explorer.EXE	46
PID 3092 wrote to memory of 3820	3092	Explorer.EXE	46
PID 3092 wrote to memory of 3820	3092	Explorer.EXE	46
PID 3092 wrote to memory of 4832	3092	Explorer.EXE	43
PID 3092 wrote to memory of 4832	3092	Explorer.EXE	43
PID 3092 wrote to memory of 4832	3092	Explorer.EXE	43
PID 3092 wrote to memory of 3944	3092	Explorer.EXE	82
PID 3092 wrote to memory of 3944	3092	Explorer.EXE	82
PID 3092 wrote to memory of 3944	3092	Explorer.EXE	82

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3576

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:4832

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3820

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Users\Admin\AppData\Local\Temp\056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe
  "C:\Users\Admin\AppData\Local\Temp\056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Checks SCSI registry key(s)
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DC59\9B91.bat" "C:\Users\Admin\AppData\Roaming\AppVider\Authbk32.exe" "C:\Users\Admin\AppData\Local\Temp\056C73~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4880
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\AppVider\Authbk32.exe" "C:\Users\Admin\AppData\Local\Temp\056C73~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4292
    - - C:\Users\Admin\AppData\Roaming\AppVider\Authbk32.exe
        
        "C:\Users\Admin\AppData\Roaming\AppVider\Authbk32.exe" "C:\Users\Admin\AppData\Local\Temp\056C73~1.EXE"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Checks SCSI registry key(s)
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:4952
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:2388

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3944

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

9B91.bat

Path C:\Users\Admin\AppData\Local\Temp\DC59\9B91.bat
Size 112B
SHA256 b9c1da416ed68303d89771b03ec23c504d16ece623f8531e97c0675d3f38c449
MD5 a988ff866c89a27cb0ef91dd202ccaf1
SHA1 8de0322e6cfa3f51d8a0e17f16b9130d568cb837
SHA512 a7d014f819081376391d5da7bae3b285c98859f8175c8628e79b0b9d9a8d94a4aca7bcc0ca4fd9b310c702e3f9f7e42ba86a9004cb07d252008e119236409b2a
MD5 SHA1 SHA512

Submit Download

Authbk32.exe

Path C:\Users\Admin\AppData\Roaming\AppVider\Authbk32.exe
Size 350KB
SHA256 056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5
MD5 3f65f241981377c60c4f96e43f2925c3
SHA1 6f11358676bc96c1062858739904f955996906f4
SHA512 a02f051946afddd0034db22539f73d5639a8e57f0c5c19fa355f1e198691f83fc7df95c208c4330838a84265b5aaba6eac72f698e6307455d8561f621b6d005d
SSDEEP 6144:n5gNwmDoctwXekY4no0zbbRzpBwmZm+72dCMKB7QNk3VcXaO:kknXekNoYJzLids7Ak3VEN
MD5 SHA1 SHA512 SSDEEP

Submit Download

Authbk32.exe

Path C:\Users\Admin\AppData\Roaming\AppVider\Authbk32.exe
Size 350KB
SHA256 056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5
MD5 3f65f241981377c60c4f96e43f2925c3
SHA1 6f11358676bc96c1062858739904f955996906f4
SHA512 a02f051946afddd0034db22539f73d5639a8e57f0c5c19fa355f1e198691f83fc7df95c208c4330838a84265b5aaba6eac72f698e6307455d8561f621b6d005d
SSDEEP 6144:n5gNwmDoctwXekY4no0zbbRzpBwmZm+72dCMKB7QNk3VcXaO:kknXekNoYJzLids7Ak3VEN
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2388-139-0x0000000000180000-0x0000000000268000-memory.dmp

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memory/3092-145-0x0000000007DE0000-0x0000000007EC8000-memory.dmp

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memory/3092-140-0x0000000007DE0000-0x0000000007EC8000-memory.dmp

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memory/3576-141-0x00000227112D0000-0x00000227113B8000-memory.dmp

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memory/3820-142-0x00000206DB030000-0x00000206DB118000-memory.dmp

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memory/3944-144-0x0000013DC3800000-0x0000013DC38E8000-memory.dmp

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memory/4832-143-0x000001E2735B0000-0x000001E273698000-memory.dmp

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