gozi_ifsb | 1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1

General

Target

1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe
Size

273KB
MD5

1cd64557583a7131ff7ba4645b5cabde
SHA1

60953f75f0ce09ddbe7e3b8b93120e5def98541b
SHA256

1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1
SHA512

49e8d53adbf42a982aaed759607f609ebf9aec9f8874a5973f58d4b9e2f3594534c7e661ee2dfb01147052b64c3f4032f8720dab477f3455a6488ef6fea3f75f

Score

10^/10

gozi_ifsb ursnif banker persistence spyware trojan upx

Malware Config

Extracted

Family

ursnif

Attributes

dga_base_url
dga_crc
0
dga_season
0
dga_tlds
dns_servers

Signatures

Gozi, Gozi IFSB
Gozi ISFB is a well-known and widely distributed banking trojan.
banker trojan gozi_ifsb
Ursnif, Dreambot
Ursnif is a variant of the Gozi IFSB with more capabilities.
banker trojan ursnif

Executes dropped EXE 1 IoCs

pid	Process
1976	chsbmifs.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x00040000000130e9-3.dat	upx
behavioral1/files/0x00040000000130e9-4.dat	upx
behavioral1/files/0x00040000000130e9-6.dat	upx

Deletes itself 1 IoCs

pid	Process
1976	chsbmifs.exe

Loads dropped DLL 1 IoCs

pid	Process
2000	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\getumf32 = "C:\\Users\\Admin\\AppData\\Roaming\\apssclnt\\chsbmifs.exe"	1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 1784	1976	chsbmifs.exe	30
PID 1784 set thread context of 1260	1784	svchost.exe	21

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1976	chsbmifs.exe
1260	Explorer.EXE

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1976	chsbmifs.exe
1784	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1260	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 1420	1068	1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe	26
PID 1068 wrote to memory of 1420	1068	1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe	26
PID 1068 wrote to memory of 1420	1068	1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe	26
PID 1068 wrote to memory of 1420	1068	1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe	26
PID 1420 wrote to memory of 2000	1420	cmd.exe	28
PID 1420 wrote to memory of 2000	1420	cmd.exe	28
PID 1420 wrote to memory of 2000	1420	cmd.exe	28
PID 1420 wrote to memory of 2000	1420	cmd.exe	28
PID 2000 wrote to memory of 1976	2000	cmd.exe	29
PID 2000 wrote to memory of 1976	2000	cmd.exe	29
PID 2000 wrote to memory of 1976	2000	cmd.exe	29
PID 2000 wrote to memory of 1976	2000	cmd.exe	29
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1976 wrote to memory of 1784	1976	chsbmifs.exe	30
PID 1784 wrote to memory of 1260	1784	svchost.exe	21
PID 1784 wrote to memory of 1260	1784	svchost.exe	21
PID 1784 wrote to memory of 1260	1784	svchost.exe	21

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1260
- C:\Users\Admin\AppData\Local\Temp\1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe
  "C:\Users\Admin\AppData\Local\Temp\1c7e6efa98f896453080926d8a06a0f34dc89efc5e284cc6d827514e357064a1.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1068
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\2A6C\1536.bat" "C:\Users\Admin\AppData\Roaming\apssclnt\chsbmifs.exe" "C:\Users\Admin\AppData\Local\Temp\1C7E6E~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1420
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\apssclnt\chsbmifs.exe" "C:\Users\Admin\AppData\Local\Temp\1C7E6E~1.EXE""
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:2000
    - - C:\Users\Admin\AppData\Roaming\apssclnt\chsbmifs.exe
        
        "C:\Users\Admin\AppData\Roaming\apssclnt\chsbmifs.exe" "C:\Users\Admin\AppData\Local\Temp\1C7E6E~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:1976
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:1784

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1536-11-0x000007FEF6460000-0x000007FEF66DA000-memory.dmp

Filesize
2.5MB

Download
memory/1784-12-0x0000000002AE0000-0x0000000002B76000-memory.dmp

Filesize
600KB

Download
memory/1976-8-0x0000000001E00000-0x0000000001E96000-memory.dmp

Filesize
600KB

Download

Analysis

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