gozi_ifsb | 522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2

Analysis

max time kernel
129s
max time network
140s
platform
windows10_x64
resource
win10v20201028
submitted
14-11-2020 18:32

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General

Target

522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe
Size

365KB
MD5

1ec1a06e9206527fa74c5560f1fa71b7
SHA1

808955643df13e421c270e377c819cde4dd2c845
SHA256

522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2
SHA512

f6d860a6b21db89615e90caadcc33734a0c6c1a0953fec6d9c0e9330dfb12d8455536ba7c398e86ed33d5e18490cc58ddae3b0c09733bbd1f58394cb5562c604

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
1456	atltartv.exe

Deletes itself 1 IoCs

pid	Process
1456	atltartv.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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\appmgSup = "C:\\Users\\Admin\\AppData\\Roaming\\amstcca\\atltartv.exe"	522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1456 set thread context of 4092	1456	atltartv.exe	83
PID 4092 set thread context of 3040	4092	svchost.exe	57
PID 3040 set thread context of 3500	3040	Explorer.EXE	60
PID 3040 set thread context of 2708	3040	Explorer.EXE	89

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1456	atltartv.exe
1456	atltartv.exe
3040	Explorer.EXE
3040	Explorer.EXE

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1456	atltartv.exe
4092	svchost.exe
3040	Explorer.EXE
3040	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3040	Explorer.EXE

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3040	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3040	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 2932	1048	522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe	76
PID 1048 wrote to memory of 2932	1048	522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe	76
PID 1048 wrote to memory of 2932	1048	522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe	76
PID 2932 wrote to memory of 204	2932	cmd.exe	78
PID 2932 wrote to memory of 204	2932	cmd.exe	78
PID 2932 wrote to memory of 204	2932	cmd.exe	78
PID 204 wrote to memory of 1456	204	cmd.exe	79
PID 204 wrote to memory of 1456	204	cmd.exe	79
PID 204 wrote to memory of 1456	204	cmd.exe	79
PID 1456 wrote to memory of 4092	1456	atltartv.exe	83
PID 1456 wrote to memory of 4092	1456	atltartv.exe	83
PID 1456 wrote to memory of 4092	1456	atltartv.exe	83
PID 1456 wrote to memory of 4092	1456	atltartv.exe	83
PID 1456 wrote to memory of 4092	1456	atltartv.exe	83
PID 4092 wrote to memory of 3040	4092	svchost.exe	57
PID 4092 wrote to memory of 3040	4092	svchost.exe	57
PID 4092 wrote to memory of 3040	4092	svchost.exe	57
PID 3040 wrote to memory of 3500	3040	Explorer.EXE	60
PID 3040 wrote to memory of 3500	3040	Explorer.EXE	60
PID 3040 wrote to memory of 3500	3040	Explorer.EXE	60
PID 3040 wrote to memory of 816	3040	Explorer.EXE	84
PID 3040 wrote to memory of 816	3040	Explorer.EXE	84
PID 816 wrote to memory of 3960	816	cmd.exe	86
PID 816 wrote to memory of 3960	816	cmd.exe	86
PID 3040 wrote to memory of 3992	3040	Explorer.EXE	87
PID 3040 wrote to memory of 3992	3040	Explorer.EXE	87
PID 3040 wrote to memory of 2708	3040	Explorer.EXE	89
PID 3040 wrote to memory of 2708	3040	Explorer.EXE	89
PID 3040 wrote to memory of 2708	3040	Explorer.EXE	89
PID 3040 wrote to memory of 2708	3040	Explorer.EXE	89
PID 3040 wrote to memory of 2708	3040	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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe
  "C:\Users\Admin\AppData\Local\Temp\522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\A45A\522D.bat" "C:\Users\Admin\AppData\Roaming\amstcca\atltartv.exe" "C:\Users\Admin\AppData\Local\Temp\522B12~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2932
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\amstcca\atltartv.exe" "C:\Users\Admin\AppData\Local\Temp\522B12~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:204
    - - C:\Users\Admin\AppData\Roaming\amstcca\atltartv.exe
        
        "C:\Users\Admin\AppData\Roaming\amstcca\atltartv.exe" "C:\Users\Admin\AppData\Local\Temp\522B12~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:1456
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:4092
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\3E5.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:816
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:3960
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\3E5.bi1"
  2⤵
  PID:3992
- C:\Program Files\Windows Mail\WinMail.exe
  "C:\Program Files\Windows Mail\WinMail" OCInstallUserConfigOE
  2⤵
  PID:2708

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3500

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/1456-7-0x0000000002AE0000-0x0000000002B6F000-memory.dmp

Filesize
572KB

Download
memory/2708-20-0x00000224D30B0000-0x00000224D30E5000-memory.dmp

Filesize
212KB

Download
memory/3040-18-0x0000000006720000-0x00000000067AF000-memory.dmp

Filesize
572KB

Download
memory/3040-11-0x0000000006720000-0x00000000067AF000-memory.dmp

Filesize
572KB

Download
memory/4092-10-0x000001FC5ED80000-0x000001FC5EE0F000-memory.dmp

Filesize
572KB

Download
memory/4092-9-0x0000000000C10000-0x0000000000C45000-memory.dmp

Filesize
212KB

Download