gozi_ifsb | d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702

Analysis

max time kernel
139s
max time network
144s
platform
windows10_x64
resource
win10v20201028
submitted
13-11-2020 15:39

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General

Target

d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe
Size

327KB
MD5

2e2ed2b2bc917a92eb0d9bdb466da3b9
SHA1

f361d57f199c8a75c8e92b5ff0385e978cda0e53
SHA256

d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702
SHA512

7011c2fea9a87c19b86ce4fff579a7e73796ea9fc4474880ef0f84801f86a37b385b54cb271dc486f38ff3fd6f1727d0ac640e7155f1fa297b80e61e360fa844

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
492	Callmuid.exe

Deletes itself 1 IoCs

pid	Process
492	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"	d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 492 set thread context of 3652	492	Callmuid.exe	82
PID 3652 set thread context of 3044	3652	svchost.exe	57
PID 3044 set thread context of 3592	3044	Explorer.EXE	60
PID 3044 set thread context of 3096	3044	Explorer.EXE	89

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
492	Callmuid.exe
492	Callmuid.exe
3044	Explorer.EXE
3044	Explorer.EXE

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
492	Callmuid.exe
3652	svchost.exe
3044	Explorer.EXE
3044	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3044	Explorer.EXE
Token: SeCreatePagefilePrivilege	3044	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3044	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 996	1140	d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe	76
PID 1140 wrote to memory of 996	1140	d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe	76
PID 1140 wrote to memory of 996	1140	d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe	76
PID 996 wrote to memory of 208	996	cmd.exe	78
PID 996 wrote to memory of 208	996	cmd.exe	78
PID 996 wrote to memory of 208	996	cmd.exe	78
PID 208 wrote to memory of 492	208	cmd.exe	79
PID 208 wrote to memory of 492	208	cmd.exe	79
PID 208 wrote to memory of 492	208	cmd.exe	79
PID 492 wrote to memory of 3652	492	Callmuid.exe	82
PID 492 wrote to memory of 3652	492	Callmuid.exe	82
PID 492 wrote to memory of 3652	492	Callmuid.exe	82
PID 492 wrote to memory of 3652	492	Callmuid.exe	82
PID 492 wrote to memory of 3652	492	Callmuid.exe	82
PID 3652 wrote to memory of 3044	3652	svchost.exe	57
PID 3652 wrote to memory of 3044	3652	svchost.exe	57
PID 3652 wrote to memory of 3044	3652	svchost.exe	57
PID 3044 wrote to memory of 3592	3044	Explorer.EXE	60
PID 3044 wrote to memory of 3592	3044	Explorer.EXE	60
PID 3044 wrote to memory of 3592	3044	Explorer.EXE	60
PID 3044 wrote to memory of 3772	3044	Explorer.EXE	84
PID 3044 wrote to memory of 3772	3044	Explorer.EXE	84
PID 3772 wrote to memory of 2096	3772	cmd.exe	86
PID 3772 wrote to memory of 2096	3772	cmd.exe	86
PID 3044 wrote to memory of 2444	3044	Explorer.EXE	87
PID 3044 wrote to memory of 2444	3044	Explorer.EXE	87
PID 3044 wrote to memory of 3096	3044	Explorer.EXE	89
PID 3044 wrote to memory of 3096	3044	Explorer.EXE	89
PID 3044 wrote to memory of 3096	3044	Explorer.EXE	89
PID 3044 wrote to memory of 3096	3044	Explorer.EXE	89
PID 3044 wrote to memory of 3096	3044	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 AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe
  "C:\Users\Admin\AppData\Local\Temp\d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1140
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\97A8\37.bat" "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\D0C6A4~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:996
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\D0C6A4~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:208
    - - C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe
        
        "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\D0C6A4~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:492
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3652
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\EE3A.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3772
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:2096
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\EE3A.bi1"
  2⤵
  PID:2444
- C:\Program Files\Windows Mail\WinMail.exe
  "C:\Program Files\Windows Mail\WinMail" OCInstallUserConfigOE
  2⤵
  PID:3096

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3592

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/492-7-0x00000000007C0000-0x000000000084F000-memory.dmp

Filesize
572KB

Download
memory/3044-18-0x0000000005D50000-0x0000000005DDF000-memory.dmp

Filesize
572KB

Download
memory/3044-11-0x0000000005D50000-0x0000000005DDF000-memory.dmp

Filesize
572KB

Download
memory/3096-20-0x000002E0BD040000-0x000002E0BD075000-memory.dmp

Filesize
212KB

Download
memory/3652-10-0x00000296FA460000-0x00000296FA4EF000-memory.dmp

Filesize
572KB

Download
memory/3652-9-0x00000000002E0000-0x0000000000315000-memory.dmp

Filesize
212KB

Download