gozi_ifsb | 57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c

Analysis

max time kernel
144s
max time network
151s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
24-07-2022 20:22

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General

Target

57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe
Size

457KB
MD5

13b78d808996120ae0ce4d1b19947c3e
SHA1

6937e2e6301f5ecb0251c26a3ad0afe4a0d30aed
SHA256

57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c
SHA512

1c8000f502c10222aa4e14ae00a709d0f0684286de3a125b41649d8749632a91fba31866ce949713cc7920651745ab1f1f9fe3568d25c9065e37de2c47f754dd

Score

10^/10

gozi_ifsb banker persistence trojan

Malware Config

Extracted

Family

gozi_ifsb

Attributes

build
214963

Signatures

Gozi, Gozi IFSB
Gozi ISFB is a well-known and widely distributed banking trojan.
banker trojan gozi_ifsb

Executes dropped EXE 1 IoCs

Processes:

apisutil.exe

pid	Process
1128	apisutil.exe

Deletes itself 1 IoCs

Processes:

apisutil.exe

pid	Process
1128	apisutil.exe

Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid	Process
1936	cmd.exe

Unexpected DNS network traffic destination 3 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description	ioc
Destination IP	208.67.222.222
Destination IP	208.67.222.222
Destination IP	208.67.222.222

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\devruota = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Dhcpgpui\\apisutil.exe"	57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

apisutil.exesvchost.exe

description	pid	Process	procid_target
PID 1128 set thread context of 1452	1128	apisutil.exe	31
PID 1452 set thread context of 1388	1452	svchost.exe	12

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

apisutil.exeExplorer.EXE

pid	Process
1128	apisutil.exe
1388	Explorer.EXE
1388	Explorer.EXE
1388	Explorer.EXE

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

apisutil.exesvchost.exe

pid	Process
1128	apisutil.exe
1452	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid	Process
1388	Explorer.EXE
1388	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid	Process
1388	Explorer.EXE
1388	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.execmd.execmd.exeapisutil.exesvchost.exeExplorer.EXEcmd.exe

description	pid	Process	procid_target
PID 1812 wrote to memory of 1516	1812	57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe	27
PID 1812 wrote to memory of 1516	1812	57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe	27
PID 1812 wrote to memory of 1516	1812	57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe	27
PID 1812 wrote to memory of 1516	1812	57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe	27
PID 1516 wrote to memory of 1936	1516	cmd.exe	29
PID 1516 wrote to memory of 1936	1516	cmd.exe	29
PID 1516 wrote to memory of 1936	1516	cmd.exe	29
PID 1516 wrote to memory of 1936	1516	cmd.exe	29
PID 1936 wrote to memory of 1128	1936	cmd.exe	30
PID 1936 wrote to memory of 1128	1936	cmd.exe	30
PID 1936 wrote to memory of 1128	1936	cmd.exe	30
PID 1936 wrote to memory of 1128	1936	cmd.exe	30
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1128 wrote to memory of 1452	1128	apisutil.exe	31
PID 1452 wrote to memory of 1388	1452	svchost.exe	12
PID 1452 wrote to memory of 1388	1452	svchost.exe	12
PID 1452 wrote to memory of 1388	1452	svchost.exe	12
PID 1388 wrote to memory of 1592	1388	Explorer.EXE	32
PID 1388 wrote to memory of 1592	1388	Explorer.EXE	32
PID 1388 wrote to memory of 1592	1388	Explorer.EXE	32
PID 1592 wrote to memory of 1628	1592	cmd.exe	34
PID 1592 wrote to memory of 1628	1592	cmd.exe	34
PID 1592 wrote to memory of 1628	1592	cmd.exe	34
PID 1388 wrote to memory of 1632	1388	Explorer.EXE	35
PID 1388 wrote to memory of 1632	1388	Explorer.EXE	35
PID 1388 wrote to memory of 1632	1388	Explorer.EXE	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe
  "C:\Users\Admin\AppData\Local\Temp\57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\A255\1332.bat" "C:\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe" "C:\Users\Admin\AppData\Local\Temp\57B374~1.EXE""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1516
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /C ""C:\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe" "C:\Users\Admin\AppData\Local\Temp\57B374~1.EXE""
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1936
    - - C:\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe
        
        "C:\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe" "C:\Users\Admin\AppData\Local\Temp\57B374~1.EXE"
        5⤵
        Executes dropped EXE
        Deletes itself
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:1128
      - C:\Windows\system32\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:1452
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\CD48.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1592
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:1628
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\CD48.bi1"
  2⤵
  PID:1632

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

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\A255\1332.bat

Filesize
108B

MD5
fd05eab0acc08af8c458e10dd428bb0c

SHA1
618d4edd2121e11d2a201c253484ba03afad3beb

SHA256
9e1a9bf8c51f2c63995d1129f4aaa3f1c139742f215cabf100d3f098fdef5b07

SHA512
16f9bab12dbb9a9ea6e47aed99119d6800814e4eb4ca30a254856b0a60f8d2d752324d2e3cdd3ae08c6ca893eef05862e4d66a137b55754e42674747c57f854d

Download Submit
C:\Users\Admin\AppData\Local\Temp\CD48.bi1

Filesize
118B

MD5
4f6429322fdfd711b81d8824b25fcd9c

SHA1
f7f917b64dd43b620bacd21f134d430d3c406aec

SHA256
d22c844d015c874bbdbeb12b73ef54585cbd435c28f50d536fb4ace26d859ed8

SHA512
e661f8d79b031a4a043a388ec17d82b5092859ac1d0ce6668a082feecf1da5665837ad1ef984751c7be174bbb6c1012f45d9f550d5cf65dc8b0e6cddcbdb0816

Download Submit
C:\Users\Admin\AppData\Local\Temp\CD48.bi1

Filesize
118B

MD5
4f6429322fdfd711b81d8824b25fcd9c

SHA1
f7f917b64dd43b620bacd21f134d430d3c406aec

SHA256
d22c844d015c874bbdbeb12b73ef54585cbd435c28f50d536fb4ace26d859ed8

SHA512
e661f8d79b031a4a043a388ec17d82b5092859ac1d0ce6668a082feecf1da5665837ad1ef984751c7be174bbb6c1012f45d9f550d5cf65dc8b0e6cddcbdb0816

Download Submit
C:\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe

Filesize
457KB

MD5
13b78d808996120ae0ce4d1b19947c3e

SHA1
6937e2e6301f5ecb0251c26a3ad0afe4a0d30aed

SHA256
57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c

SHA512
1c8000f502c10222aa4e14ae00a709d0f0684286de3a125b41649d8749632a91fba31866ce949713cc7920651745ab1f1f9fe3568d25c9065e37de2c47f754dd

Download Submit
C:\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe

Filesize
457KB

MD5
13b78d808996120ae0ce4d1b19947c3e

SHA1
6937e2e6301f5ecb0251c26a3ad0afe4a0d30aed

SHA256
57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c

SHA512
1c8000f502c10222aa4e14ae00a709d0f0684286de3a125b41649d8749632a91fba31866ce949713cc7920651745ab1f1f9fe3568d25c9065e37de2c47f754dd

Download Submit
\Users\Admin\AppData\Roaming\MICROS~1\Dhcpgpui\apisutil.exe

Filesize
457KB

MD5
13b78d808996120ae0ce4d1b19947c3e

SHA1
6937e2e6301f5ecb0251c26a3ad0afe4a0d30aed

SHA256
57b374e2d2f002c11c69b454fcf1aa57bd971cd0638eca12c6691cdb6a2f011c

SHA512
1c8000f502c10222aa4e14ae00a709d0f0684286de3a125b41649d8749632a91fba31866ce949713cc7920651745ab1f1f9fe3568d25c9065e37de2c47f754dd

Download Submit
memory/1128-66-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1128-64-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1128-62-0x0000000000000000-mapping.dmp

Download
memory/1388-69-0x0000000008470000-0x0000000008A87000-memory.dmp

Filesize
6.1MB

Download
memory/1388-68-0x00000000042B0000-0x0000000004342000-memory.dmp

Filesize
584KB

Download
memory/1388-81-0x00000000042B0000-0x0000000004342000-memory.dmp

Filesize
584KB

Download
memory/1452-65-0x0000000000000000-mapping.dmp

Download
memory/1452-67-0x00000000003A0000-0x0000000000432000-memory.dmp

Filesize
584KB

Download
memory/1516-56-0x0000000000000000-mapping.dmp

Download
memory/1592-76-0x0000000000000000-mapping.dmp

Download
memory/1628-77-0x0000000000000000-mapping.dmp

Download
memory/1632-78-0x0000000000000000-mapping.dmp

Download
memory/1812-57-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1812-54-0x00000000002E0000-0x000000000033D000-memory.dmp

Filesize
372KB

Download
memory/1812-55-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1936-59-0x0000000000000000-mapping.dmp

Download