gozi_ifsb | d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba

Analysis

max time kernel
126s
max time network
138s
platform
windows10_x64
resource
win10v20201028
submitted
10-11-2020 11:49

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General

Target

d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe
Size

365KB
MD5

7012fcbeda3bebbceef18eba8e2a78db
SHA1

64bf265931d406c6c1632c5a6a16cbf335b1202e
SHA256

d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba
SHA512

9761ab641cc625e804922522c6b89d95f1dee7325f634d39f6f8eb71cd45af8b75f24152759ee59977cf026fa696d85d77161cd3db246915b2240e31c1f69a6b

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
3968	Callmuid.exe

Deletes itself 1 IoCs

pid	Process
3968	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"	d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3968 set thread context of 3100	3968	Callmuid.exe	83
PID 3100 set thread context of 3116	3100	svchost.exe	58
PID 3116 set thread context of 3580	3116	Explorer.EXE	61
PID 3116 set thread context of 3936	3116	Explorer.EXE	89

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3968	Callmuid.exe
3968	Callmuid.exe
3116	Explorer.EXE
3116	Explorer.EXE

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3968	Callmuid.exe
3100	svchost.exe
3116	Explorer.EXE
3116	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3116	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 2484	3408	d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe	76
PID 3408 wrote to memory of 2484	3408	d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe	76
PID 3408 wrote to memory of 2484	3408	d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe	76
PID 2484 wrote to memory of 3768	2484	cmd.exe	78
PID 2484 wrote to memory of 3768	2484	cmd.exe	78
PID 2484 wrote to memory of 3768	2484	cmd.exe	78
PID 3768 wrote to memory of 3968	3768	cmd.exe	79
PID 3768 wrote to memory of 3968	3768	cmd.exe	79
PID 3768 wrote to memory of 3968	3768	cmd.exe	79
PID 3968 wrote to memory of 3100	3968	Callmuid.exe	83
PID 3968 wrote to memory of 3100	3968	Callmuid.exe	83
PID 3968 wrote to memory of 3100	3968	Callmuid.exe	83
PID 3968 wrote to memory of 3100	3968	Callmuid.exe	83
PID 3968 wrote to memory of 3100	3968	Callmuid.exe	83
PID 3100 wrote to memory of 3116	3100	svchost.exe	58
PID 3100 wrote to memory of 3116	3100	svchost.exe	58
PID 3100 wrote to memory of 3116	3100	svchost.exe	58
PID 3116 wrote to memory of 3580	3116	Explorer.EXE	61
PID 3116 wrote to memory of 3580	3116	Explorer.EXE	61
PID 3116 wrote to memory of 3580	3116	Explorer.EXE	61
PID 3116 wrote to memory of 3492	3116	Explorer.EXE	84
PID 3116 wrote to memory of 3492	3116	Explorer.EXE	84
PID 3492 wrote to memory of 376	3492	cmd.exe	86
PID 3492 wrote to memory of 376	3492	cmd.exe	86
PID 3116 wrote to memory of 1796	3116	Explorer.EXE	87
PID 3116 wrote to memory of 1796	3116	Explorer.EXE	87
PID 3116 wrote to memory of 3936	3116	Explorer.EXE	89
PID 3116 wrote to memory of 3936	3116	Explorer.EXE	89
PID 3116 wrote to memory of 3936	3116	Explorer.EXE	89
PID 3116 wrote to memory of 3936	3116	Explorer.EXE	89
PID 3116 wrote to memory of 3936	3116	Explorer.EXE	89

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:3116
- C:\Users\Admin\AppData\Local\Temp\d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe
  "C:\Users\Admin\AppData\Local\Temp\d0136345e5d9b60ead6b8eabdd9887f43f96a27bfc2c1812737da9858e32d6ba.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\77EA\3BF5.bat" "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\D01363~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2484
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\D01363~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3768
    - - C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe
        
        "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\D01363~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3968
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3100
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\E689.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3492
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:376
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\E689.bi1"
  2⤵
  PID:1796
- C:\Program Files\Windows Mail\WinMail.exe
  "C:\Program Files\Windows Mail\WinMail" OCInstallUserConfigOE
  2⤵
  PID:3936

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3580

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

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Downloads

memory/3100-9-0x0000000000AB0000-0x0000000000AE5000-memory.dmp

Filesize
212KB

Download
memory/3100-10-0x00000170E8C20000-0x00000170E8CAF000-memory.dmp

Filesize
572KB

Download
memory/3116-11-0x0000000006500000-0x000000000658F000-memory.dmp

Filesize
572KB

Download
memory/3116-18-0x0000000006500000-0x000000000658F000-memory.dmp

Filesize
572KB

Download
memory/3936-20-0x000002C222180000-0x000002C2221B5000-memory.dmp

Filesize
212KB

Download
memory/3968-7-0x0000000002290000-0x000000000231F000-memory.dmp

Filesize
572KB

Download