gozi_ifsb | 7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9

Analysis

max time kernel
144s
max time network
147s
platform
windows10_x64
resource
win10v20201028
submitted
09-11-2020 21:25

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General

Target

7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe
Size

327KB
MD5

f3cfeb4d204656cdc50ff1e180dba05d
SHA1

1b18dff965566f28027c933878403d8e9f0cef75
SHA256

7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9
SHA512

89664de6d8d3b45d4bc9237fbbba442b2d7787faaa97a6d91b55e4b2230919d4e4127d6bf439eb2417df27f4a56471a2947d5d7e3da1e60d27f182ca2873d33a

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
3324	Callmuid.exe

Deletes itself 1 IoCs

pid	Process
3324	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"	7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3324 set thread context of 2152	3324	Callmuid.exe	79
PID 2152 set thread context of 3152	2152	svchost.exe	58
PID 3152 set thread context of 3720	3152	Explorer.EXE	61
PID 3152 set thread context of 1868	3152	Explorer.EXE	88

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3324	Callmuid.exe
3324	Callmuid.exe
3152	Explorer.EXE
3152	Explorer.EXE

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3324	Callmuid.exe
2152	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 4796 wrote to memory of 780	4796	7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe	75
PID 4796 wrote to memory of 780	4796	7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe	75
PID 4796 wrote to memory of 780	4796	7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe	75
PID 780 wrote to memory of 4356	780	cmd.exe	77
PID 780 wrote to memory of 4356	780	cmd.exe	77
PID 780 wrote to memory of 4356	780	cmd.exe	77
PID 4356 wrote to memory of 3324	4356	cmd.exe	78
PID 4356 wrote to memory of 3324	4356	cmd.exe	78
PID 4356 wrote to memory of 3324	4356	cmd.exe	78
PID 3324 wrote to memory of 2152	3324	Callmuid.exe	79
PID 3324 wrote to memory of 2152	3324	Callmuid.exe	79
PID 3324 wrote to memory of 2152	3324	Callmuid.exe	79
PID 3324 wrote to memory of 2152	3324	Callmuid.exe	79
PID 3324 wrote to memory of 2152	3324	Callmuid.exe	79
PID 2152 wrote to memory of 3152	2152	svchost.exe	58
PID 2152 wrote to memory of 3152	2152	svchost.exe	58
PID 2152 wrote to memory of 3152	2152	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 1180	3152	Explorer.EXE	83
PID 3152 wrote to memory of 1180	3152	Explorer.EXE	83
PID 1180 wrote to memory of 1344	1180	cmd.exe	85
PID 1180 wrote to memory of 1344	1180	cmd.exe	85
PID 3152 wrote to memory of 1424	3152	Explorer.EXE	86
PID 3152 wrote to memory of 1424	3152	Explorer.EXE	86
PID 3152 wrote to memory of 1868	3152	Explorer.EXE	88
PID 3152 wrote to memory of 1868	3152	Explorer.EXE	88
PID 3152 wrote to memory of 1868	3152	Explorer.EXE	88
PID 3152 wrote to memory of 1868	3152	Explorer.EXE	88
PID 3152 wrote to memory of 1868	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\7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe
  "C:\Users\Admin\AppData\Local\Temp\7c3ae2e8e1285e7f5ee63a895f72c0da9eb4e9f14244cbbb1891b182fa8416f9.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\E182\70C1.bat" "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\7C3AE2~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:780
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\7C3AE2~1.EXE""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4356
    - - C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe
        
        "C:\Users\Admin\AppData\Roaming\Certmcat\Callmuid.exe" "C:\Users\Admin\AppData\Local\Temp\7C3AE2~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3324
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:2152
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\13C3.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1180
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:1344
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\13C3.bi1"
  2⤵
  PID:1424
- C:\Program Files\Windows Mail\WinMail.exe
  "C:\Program Files\Windows Mail\WinMail" OCInstallUserConfigOE
  2⤵
  PID:1868

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/1868-20-0x00000204BE090000-0x00000204BE0C5000-memory.dmp

Filesize
212KB

Download
memory/2152-10-0x000001699D910000-0x000001699D99F000-memory.dmp

Filesize
572KB

Download
memory/2152-9-0x0000000000750000-0x0000000000785000-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
memory/3324-7-0x0000000000A00000-0x0000000000A8F000-memory.dmp

Filesize
572KB

Download