gozi | ccecbbaf6bdd8b83cb5966dc1e8f6157aea6a22274166fb7c10f194ad28f4277

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 16:07

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General

Target

gye1.dll
Size

632KB
MD5

e78b3e5f216b0fc21a528a1a4de83a39
SHA1

91d536c3667177f95b1713b563d54a1437bf27d5
SHA256

4eed17645ed997121a95459508067a23459d1e36f43d50f672f198e9d117cc2c
SHA512

b56548d765c9f0fcc0f65b4f283b406ce8b4f70c8b6b3a0845299075b8bc7ae1b60032cd7fb40f69ba855767e3304904c8ce413bbdb4cc4773df439256deadeb
SSDEEP

12288:WESrSs+4SAnLh9L3aO05K/FlW8jSGI2ixY0LLFsAi3:hSrJ4AnLPI5K/FlbOY0L

Score

10^/10

gozi 401 banker discovery isfb persistence trojan

Malware Config

Extracted

Family

gozi

Extracted

Family

gozi

Botnet

401

http://cdn-cloud.at

Attributes

build
217107
dga_base_url
constitution.org/usdeclar.txt
dga_crc
0x4eb7d2ca
dga_season
10
dga_tlds
com

ru

org
exe_type
worker
server_id
12

rsa_pubkey.plain

serpent.plain

Signatures

Gozi
Gozi is a well-known and widely distributed banking trojan.
banker trojan gozi
Gozi family
gozi

Unexpected DNS network traffic destination 3 IoCs

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

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

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\clbcnect = "rundll32 \"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Cmdinput\\dimsssec.dll\",DllRegisterServer"	Explorer.EXE

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2452	2968	regsvr32.exe	30
PID 2452 set thread context of 1200	2452	control.exe	21
PID 2452 set thread context of 2208	2452	control.exe	31
PID 1200 set thread context of 2184	1200	Explorer.EXE	37

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2968	regsvr32.exe
1200	Explorer.EXE

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2968	regsvr32.exe
2452	control.exe
2452	control.exe
1200	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 1660 wrote to memory of 2968	1660	regsvr32.exe	29
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2968 wrote to memory of 2452	2968	regsvr32.exe	30
PID 2452 wrote to memory of 1200	2452	control.exe	21
PID 2452 wrote to memory of 1200	2452	control.exe	21
PID 2452 wrote to memory of 1200	2452	control.exe	21
PID 2452 wrote to memory of 2208	2452	control.exe	31
PID 2452 wrote to memory of 2208	2452	control.exe	31
PID 2452 wrote to memory of 2208	2452	control.exe	31
PID 2452 wrote to memory of 2208	2452	control.exe	31
PID 2452 wrote to memory of 2208	2452	control.exe	31
PID 2452 wrote to memory of 2208	2452	control.exe	31
PID 1200 wrote to memory of 2312	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2312	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2312	1200	Explorer.EXE	32
PID 2312 wrote to memory of 1312	2312	cmd.exe	34
PID 2312 wrote to memory of 1312	2312	cmd.exe	34
PID 2312 wrote to memory of 1312	2312	cmd.exe	34
PID 1200 wrote to memory of 2344	1200	Explorer.EXE	35
PID 1200 wrote to memory of 2344	1200	Explorer.EXE	35
PID 1200 wrote to memory of 2344	1200	Explorer.EXE	35
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37
PID 1200 wrote to memory of 2184	1200	Explorer.EXE	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\system32\regsvr32.exe
  regsvr32 /s C:\Users\Admin\AppData\Local\Temp\gye1.dll
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1660
- - C:\Windows\SysWOW64\regsvr32.exe
    /s C:\Users\Admin\AppData\Local\Temp\gye1.dll
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2968
  - - C:\Windows\system32\control.exe
      C:\Windows\system32\control.exe /?
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2452
    - - C:\Windows\system32\rundll32.exe
        
        "C:\Windows\system32\rundll32.exe" Shell32.dll,Control_RunDLL /?
        5⤵
        
        PID:2208
- C:\Windows\system32\cmd.exe
  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\7AB4.bi1"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\system32\nslookup.exe
    nslookup myip.opendns.com resolver1.opendns.com
    3⤵
    PID:1312
- C:\Windows\system32\cmd.exe
  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\7AB4.bi1"
  2⤵
  PID:2344
- C:\Windows\syswow64\cmd.exe
  "C:\Windows\syswow64\cmd.exe" /C pause dll mail, ,
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\7AB4.bi1

Filesize
111B

MD5
272152899894b1573c536b5eedafad3f

SHA1
ba73996145ff8521f1e28543c07d6b73455eef0a

SHA256
60aed64d0f599344e2e13e8583580170ab2b8a367830be8d0fff1fc194f476c8

SHA512
d7df8c91738793b70b9ef7719ad0ec3dc9c9e3c25cfe57abaafac6d6f3ceb2ab21ffe9663e10b81694a42b62529fe364588930af2dfed61e5e81c89f31b02ee7

Download Submit
C:\Users\Admin\AppData\Local\Temp\7AB4.bi1

Filesize
122B

MD5
4e722b4828cea8a135eb7a2bfd92ab01

SHA1
8e1abee672a878fd9c1d33e242502205d9b2da55

SHA256
c4d1feacbfb9ecd1a24e9b6d3e51fc7e9797da543d319f43ff0917db4c1e5e02

SHA512
88c0d6b07d45f906164b2c1178a938ffb56c4fa7288853a02f460339bca026fa58b26a37f52ea846bc205e1828f12f0361d1b0425a1106c8b1a947856d4ee4e4

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Cmdinput\dimsssec.dll

Filesize
632KB

MD5
e78b3e5f216b0fc21a528a1a4de83a39

SHA1
91d536c3667177f95b1713b563d54a1437bf27d5

SHA256
4eed17645ed997121a95459508067a23459d1e36f43d50f672f198e9d117cc2c

SHA512
b56548d765c9f0fcc0f65b4f283b406ce8b4f70c8b6b3a0845299075b8bc7ae1b60032cd7fb40f69ba855767e3304904c8ce413bbdb4cc4773df439256deadeb

Download Submit
memory/1200-21-0x0000000004D80000-0x0000000004E33000-memory.dmp

Filesize
716KB

Download
memory/1200-35-0x0000000004D80000-0x0000000004E33000-memory.dmp

Filesize
716KB

Download
memory/1200-26-0x0000000004D80000-0x0000000004E33000-memory.dmp

Filesize
716KB

Download
memory/1200-25-0x0000000002A20000-0x0000000002A21000-memory.dmp

Filesize
4KB

Download
memory/2184-40-0x00000000001B0000-0x0000000000255000-memory.dmp

Filesize
660KB

Download
memory/2208-29-0x000007FFFFFDA000-0x000007FFFFFDB000-memory.dmp

Filesize
4KB

Download
memory/2208-30-0x0000000001E10000-0x0000000001EC3000-memory.dmp

Filesize
716KB

Download
memory/2452-19-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/2452-20-0x0000000001B80000-0x0000000001C33000-memory.dmp

Filesize
716KB

Download
memory/2452-12-0x0000000001B80000-0x0000000001C33000-memory.dmp

Filesize
716KB

Download
memory/2452-34-0x0000000001B80000-0x0000000001C33000-memory.dmp

Filesize
716KB

Download
memory/2452-11-0x000007FFFFFDF000-0x000007FFFFFE0000-memory.dmp

Filesize
4KB

Download
memory/2968-17-0x0000000010000000-0x000000001019D000-memory.dmp

Filesize
1.6MB

Download
memory/2968-18-0x0000000010066000-0x0000000010069000-memory.dmp

Filesize
12KB

Download
memory/2968-0-0x0000000010066000-0x0000000010069000-memory.dmp

Filesize
12KB

Download
memory/2968-2-0x0000000000830000-0x000000000087A000-memory.dmp

Filesize
296KB

Download
memory/2968-9-0x0000000000830000-0x000000000087A000-memory.dmp

Filesize
296KB

Download
memory/2968-1-0x0000000010000000-0x000000001019D000-memory.dmp

Filesize
1.6MB

Download