gozi | b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb

General

Target

b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe
Size

296KB
MD5

0f4a3710b28ebbf430bc765f9b9e9740
SHA1

362460f5f63c8cf844dc089454f72cb974046c07
SHA256

b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb
SHA512

fdfa471259ecb69f64b749b485e9cb9d2be2227113117dc19facce9daba4f86f19dbe34fa36379e89ecc0ddaf42aaa69a275c15d78b50b6a80777001e4b4839c
SSDEEP

6144:BSu1zvPvYDyLpj5weLCVrk0WRm/wpnN5Oie6xjMPt9eZiC3:gu1znL8k0WdNre6h+t9k

Score

10^/10

gozi 1099 banker isfb persistence trojan

Malware Config

Extracted

Family

gozi

Extracted

Family

gozi

Botnet

1099

C2

fkklqkjgnr.com

sinpotikos.com

bnkalirmf.com

Attributes

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

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

pid	Process
1504	cmd.exe

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\dhcpprop = "C:\\Windows\\system32\\Audiwcfg.exe"	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\Audiwcfg.exe	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe
File created	C:\Windows\system32\Audiwcfg.exe	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 740 set thread context of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27

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

System Information Discovery
T1082

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1924	explorer.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe
Token: SeShutdownPrivilege	1924	explorer.exe

Suspicious use of FindShellTrayWindow 30 IoCs

pid	Process
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe
1924	explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1924	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	27
PID 740 wrote to memory of 1504	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	28
PID 740 wrote to memory of 1504	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	28
PID 740 wrote to memory of 1504	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	28
PID 740 wrote to memory of 1504	740	b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe	28
PID 1504 wrote to memory of 1768	1504	cmd.exe	30
PID 1504 wrote to memory of 1768	1504	cmd.exe	30
PID 1504 wrote to memory of 1768	1504	cmd.exe	30
PID 1504 wrote to memory of 1768	1504	cmd.exe	30

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1768	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe
"C:\Users\Admin\AppData\Local\Temp\b3b8433b8322d3884a24aa66d423bb386bd2d26edc86f09f5409a7a30b52bcfb.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\explorer.exe
  C:\Windows\explorer.exe
  2⤵
  - Modifies Installed Components in the registry
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1924
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\381F.bat" "C:\Users\Admin\AppData\Local\Temp\B3B843~1.EXE""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\SysWOW64\attrib.exe
    attrib -r -s -h "C:\Users\Admin\AppData\Local\Temp\B3B843~1.EXE"
    3⤵
    - Views/modifies file attributes
    PID:1768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\381F.bat

Filesize
72B

MD5
06cb28d678c5f24c16e1c9cb1e92b337

SHA1
399ecc84dd035983c41a65a9106f9f87b080d314

SHA256
820846ce52b38cf76a480a649224f6b3f35b50845273035f8de7ce793554d8cf

SHA512
da137bf0d242e64a74ca0954fbec0addf57febfa3970a0826e3c1362a1f9338decadc6048d101c3226872265cc60a318ae1e95d01b3f3e0f41235dea04496126

Download Submit
memory/740-54-0x0000000075A81000-0x0000000075A83000-memory.dmp

Filesize
8KB

Download
memory/740-55-0x0000000000400000-0x0000000000670000-memory.dmp

Filesize
2.4MB

Download
memory/740-56-0x0000000000240000-0x0000000000243000-memory.dmp

Filesize
12KB

Download
memory/740-57-0x0000000000300000-0x0000000000303000-memory.dmp

Filesize
12KB

Download
memory/1924-59-0x000007FEFB9B1000-0x000007FEFB9B3000-memory.dmp

Filesize
8KB

Download
memory/1924-61-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads