gozi_ifsb | 056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5

Analysis

max time kernel
599s
max time network
484s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26-10-2022 23:52

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General

Target

056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe
Size

350KB
MD5

3f65f241981377c60c4f96e43f2925c3
SHA1

6f11358676bc96c1062858739904f955996906f4
SHA256

056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5
SHA512

a02f051946afddd0034db22539f73d5639a8e57f0c5c19fa355f1e198691f83fc7df95c208c4330838a84265b5aaba6eac72f698e6307455d8561f621b6d005d
SSDEEP

6144:n5gNwmDoctwXekY4no0zbbRzpBwmZm+72dCMKB7QNk3VcXaO:kknXekNoYJzLids7Ak3VEN

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

Processes:

authrypt.exe

pid	Process
5016	authrypt.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

Processes:

056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Certclb = "C:\\Users\\Admin\\AppData\\Roaming\\Adaprvut\\authrypt.exe"	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe

Suspicious use of SetThreadContext 6 IoCs

Processes:

authrypt.exesvchost.exeExplorer.EXE

description	pid	Process	procid_target
PID 5016 set thread context of 1780	5016	authrypt.exe	86
PID 1780 set thread context of 3060	1780	svchost.exe	44
PID 3060 set thread context of 3508	3060	Explorer.EXE	21
PID 3060 set thread context of 3812	3060	Explorer.EXE	39
PID 3060 set thread context of 4808	3060	Explorer.EXE	37
PID 3060 set thread context of 3212	3060	Explorer.EXE	24

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

Processes:

056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exeauthrypt.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	authrypt.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	authrypt.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

authrypt.exeExplorer.EXE

pid	Process
5016	authrypt.exe
5016	authrypt.exe
3060	Explorer.EXE
3060	Explorer.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid	Process
3060	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

authrypt.exesvchost.exeExplorer.EXE

pid	Process
5016	authrypt.exe
1780	svchost.exe
3060	Explorer.EXE
3060	Explorer.EXE
3060	Explorer.EXE
3060	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

Explorer.EXERuntimeBroker.exe

description	pid	Process
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE
Token: SeShutdownPrivilege	3508	RuntimeBroker.exe
Token: SeShutdownPrivilege	3508	RuntimeBroker.exe
Token: SeShutdownPrivilege	3508	RuntimeBroker.exe
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Explorer.EXE

pid	Process
3060	Explorer.EXE

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.execmd.execmd.exeauthrypt.exesvchost.exeExplorer.EXE

description	pid	Process	procid_target
PID 2448 wrote to memory of 5048	2448	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe	80
PID 2448 wrote to memory of 5048	2448	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe	80
PID 2448 wrote to memory of 5048	2448	056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe	80
PID 5048 wrote to memory of 5000	5048	cmd.exe	82
PID 5048 wrote to memory of 5000	5048	cmd.exe	82
PID 5048 wrote to memory of 5000	5048	cmd.exe	82
PID 5000 wrote to memory of 5016	5000	cmd.exe	83
PID 5000 wrote to memory of 5016	5000	cmd.exe	83
PID 5000 wrote to memory of 5016	5000	cmd.exe	83
PID 5016 wrote to memory of 1780	5016	authrypt.exe	86
PID 5016 wrote to memory of 1780	5016	authrypt.exe	86
PID 5016 wrote to memory of 1780	5016	authrypt.exe	86
PID 5016 wrote to memory of 1780	5016	authrypt.exe	86
PID 5016 wrote to memory of 1780	5016	authrypt.exe	86
PID 1780 wrote to memory of 3060	1780	svchost.exe	44
PID 1780 wrote to memory of 3060	1780	svchost.exe	44
PID 1780 wrote to memory of 3060	1780	svchost.exe	44
PID 3060 wrote to memory of 3508	3060	Explorer.EXE	21
PID 3060 wrote to memory of 3508	3060	Explorer.EXE	21
PID 3060 wrote to memory of 3508	3060	Explorer.EXE	21
PID 3060 wrote to memory of 3812	3060	Explorer.EXE	39
PID 3060 wrote to memory of 3812	3060	Explorer.EXE	39
PID 3060 wrote to memory of 3812	3060	Explorer.EXE	39
PID 3060 wrote to memory of 4808	3060	Explorer.EXE	37
PID 3060 wrote to memory of 4808	3060	Explorer.EXE	37
PID 3060 wrote to memory of 4808	3060	Explorer.EXE	37
PID 3060 wrote to memory of 3212	3060	Explorer.EXE	24
PID 3060 wrote to memory of 3212	3060	Explorer.EXE	24
PID 3060 wrote to memory of 3212	3060	Explorer.EXE	24

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3508

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3212

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:4808

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3812

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 WriteProcessMemory
PID:3060
- C:\Users\Admin\AppData\Local\Temp\056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe
  "C:\Users\Admin\AppData\Local\Temp\056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5_unpacked_dropper.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Checks SCSI registry key(s)
  - Suspicious use of WriteProcessMemory
  PID:2448
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\222C\DDB2.bat" "C:\Users\Admin\AppData\Roaming\Adaprvut\authrypt.exe" "C:\Users\Admin\AppData\Local\Temp\056C73~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5048
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\Adaprvut\authrypt.exe" "C:\Users\Admin\AppData\Local\Temp\056C73~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5000
    - - C:\Users\Admin\AppData\Roaming\Adaprvut\authrypt.exe
        
        "C:\Users\Admin\AppData\Roaming\Adaprvut\authrypt.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:5016
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:1780

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

C:\Users\Admin\AppData\Local\Temp\222C\DDB2.bat

Filesize
112B

MD5
e3de133cb17476ebc3bb12abd67bb89c

SHA1
3889b9955fd8069def97e1929dc9fdd871d9e0ea

SHA256
631dec0bd521716029f92ea5a44ed60bffe7c0a9e066096810ae8495f77c7dfa

SHA512
c2451c4454d7a350561ee553f9a93ab159ab29316d784f96fa0401080d3d7b5541420648acb603b6137d144c8b0336ae9d58195dfc0570ed769ebe50aaf46ccc

Download Submit
C:\Users\Admin\AppData\Roaming\Adaprvut\authrypt.exe

Filesize
350KB

MD5
3f65f241981377c60c4f96e43f2925c3

SHA1
6f11358676bc96c1062858739904f955996906f4

SHA256
056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5

SHA512
a02f051946afddd0034db22539f73d5639a8e57f0c5c19fa355f1e198691f83fc7df95c208c4330838a84265b5aaba6eac72f698e6307455d8561f621b6d005d

Download Submit
C:\Users\Admin\AppData\Roaming\Adaprvut\authrypt.exe

Filesize
350KB

MD5
3f65f241981377c60c4f96e43f2925c3

SHA1
6f11358676bc96c1062858739904f955996906f4

SHA256
056c73060f1553f213982a5bfb4d3535ef0594e1fcb70c8a67bc83e6b5d972c5

SHA512
a02f051946afddd0034db22539f73d5639a8e57f0c5c19fa355f1e198691f83fc7df95c208c4330838a84265b5aaba6eac72f698e6307455d8561f621b6d005d

Download Submit
memory/1780-138-0x0000000000000000-mapping.dmp

Download
memory/1780-139-0x0000000000020000-0x0000000000108000-memory.dmp

Filesize
928KB

Download
memory/3060-141-0x00000000026D0000-0x00000000027B8000-memory.dmp

Filesize
928KB

Download
memory/3060-145-0x00000000026D0000-0x00000000027B8000-memory.dmp

Filesize
928KB

Download
memory/3212-144-0x000001EC5F270000-0x000001EC5F358000-memory.dmp

Filesize
928KB

Download
memory/3508-140-0x000001631B6D0000-0x000001631B7B8000-memory.dmp

Filesize
928KB

Download
memory/3812-142-0x0000012CEB9C0000-0x0000012CEBAA8000-memory.dmp

Filesize
928KB

Download
memory/4808-143-0x000001EB198A0000-0x000001EB19988000-memory.dmp

Filesize
928KB

Download
memory/5000-134-0x0000000000000000-mapping.dmp

Download
memory/5016-135-0x0000000000000000-mapping.dmp

Download
memory/5048-132-0x0000000000000000-mapping.dmp

Download