gozi_ifsb | ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa

Analysis

max time kernel
144s
max time network
147s
platform
windows10_x64
resource
win10v20201028
submitted
08/11/2020, 14:22

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General

Target

ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe
Size

365KB
MD5

8f8fa2a30b7831c675f46d73797cb82d
SHA1

8ba2af9608ed6d56a415704bda042e30c8af79c0
SHA256

ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa
SHA512

9211d48db1035d568af288daf50fde2b56aec8e8945bbda28098cbc2175a6665895676a5c999039cce93302d26ac2b032720c71c35610c56086c01a84d1f6452

Score

10^/10

gozi_ifsb ursnif banker persistence spyware trojan

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
532	Callmuid.exe

Deletes itself 1 IoCs

pid	Process
532	Callmuid.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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\acmiager = "C:\\Users\\Admin\\AppData\\Roaming\\Certmcat\\Callmuid.exe"	ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 532 set thread context of 680	532	Callmuid.exe	82
PID 680 set thread context of 3152	680	svchost.exe	58
PID 3152 set thread context of 3720	3152	Explorer.EXE	61
PID 3152 set thread context of 2044	3152	Explorer.EXE	88

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
532	Callmuid.exe
532	Callmuid.exe
3152	Explorer.EXE
3152	Explorer.EXE

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
532	Callmuid.exe
680	svchost.exe
3152	Explorer.EXE
3152	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3152	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 4308	4800	ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe	78
PID 4800 wrote to memory of 4308	4800	ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe	78
PID 4800 wrote to memory of 4308	4800	ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe	78
PID 4308 wrote to memory of 3284	4308	cmd.exe	80
PID 4308 wrote to memory of 3284	4308	cmd.exe	80
PID 4308 wrote to memory of 3284	4308	cmd.exe	80
PID 3284 wrote to memory of 532	3284	cmd.exe	81
PID 3284 wrote to memory of 532	3284	cmd.exe	81
PID 3284 wrote to memory of 532	3284	cmd.exe	81
PID 532 wrote to memory of 680	532	Callmuid.exe	82
PID 532 wrote to memory of 680	532	Callmuid.exe	82
PID 532 wrote to memory of 680	532	Callmuid.exe	82
PID 532 wrote to memory of 680	532	Callmuid.exe	82
PID 532 wrote to memory of 680	532	Callmuid.exe	82
PID 680 wrote to memory of 3152	680	svchost.exe	58
PID 680 wrote to memory of 3152	680	svchost.exe	58
PID 680 wrote to memory of 3152	680	svchost.exe	58
PID 3152 wrote to memory of 3720	3152	Explorer.EXE	61
PID 3152 wrote to memory of 3720	3152	Explorer.EXE	61
PID 3152 wrote to memory of 3720	3152	Explorer.EXE	61
PID 3152 wrote to memory of 1344	3152	Explorer.EXE	83
PID 3152 wrote to memory of 1344	3152	Explorer.EXE	83
PID 1344 wrote to memory of 1592	1344	cmd.exe	85
PID 1344 wrote to memory of 1592	1344	cmd.exe	85
PID 3152 wrote to memory of 1680	3152	Explorer.EXE	86
PID 3152 wrote to memory of 1680	3152	Explorer.EXE	86
PID 3152 wrote to memory of 2044	3152	Explorer.EXE	88
PID 3152 wrote to memory of 2044	3152	Explorer.EXE	88
PID 3152 wrote to memory of 2044	3152	Explorer.EXE	88
PID 3152 wrote to memory of 2044	3152	Explorer.EXE	88
PID 3152 wrote to memory of 2044	3152	Explorer.EXE	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Users\Admin\AppData\Local\Temp\ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe
  "C:\Users\Admin\AppData\Local\Temp\ee12174421fe88e3d229a3ceeb79d46695c837cbe6b395ff60bbfed3944fc4fa.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4800
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FFE6\7FF3.bat" "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\EE1217~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4308
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\EE1217~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3284
    - - C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe
        
        "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\EE1217~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:532
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:680
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\2A68.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1344
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:1592
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\2A68.bi1"
  2⤵
  PID:1680
- C:\Program Files\Windows Mail\WinMail.exe
  "C:\Program Files\Windows Mail\WinMail" OCInstallUserConfigOE
  2⤵
  PID:2044

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3720

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

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/532-7-0x0000000002AF0000-0x0000000002B7F000-memory.dmp

Filesize
572KB

Download
memory/680-9-0x00000000009F0000-0x0000000000A25000-memory.dmp

Filesize
212KB

Download
memory/680-10-0x00000159B4200000-0x00000159B428F000-memory.dmp

Filesize
572KB

Download
memory/2044-20-0x000001FEE3510000-0x000001FEE3545000-memory.dmp

Filesize
212KB

Download
memory/3152-11-0x0000000004DA0000-0x0000000004E2F000-memory.dmp

Filesize
572KB

Download
memory/3152-18-0x0000000004DA0000-0x0000000004E2F000-memory.dmp

Filesize
572KB

Download