gozi | a7f413018c2a419f2c035493f53145bf0da2c0e3cb91dbd03bc561df4e97eee6

General

Target

JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
Size

49KB
MD5

6f2ed1b899c1fc62c0e081a8d24fc455
SHA1

14a939196a91f40156b58f19d90a94ca37186b33
SHA256

a7f413018c2a419f2c035493f53145bf0da2c0e3cb91dbd03bc561df4e97eee6
SHA512

3152acd97167a050531c8fd8598fef1e1daaf0585867e8c48a0ffde2a3022d4e0239dae62c22be164722555554ad6f28bf3b957bbb7d547e16b3788134c18401
SSDEEP

1536:yxQ0jkanEqtQDV2NZpVSGozp2zZ2Z1yi:qtgA7uVuHup2zZC1y

Score

10^/10

gozi banker discovery isfb persistence trojan upx

Malware Config

Extracted

Family

gozi

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4332	taskdir.exe

Loads dropped DLL 5 IoCs

pid	Process
2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
4332	taskdir.exe
4332	taskdir.exe
4332	taskdir.exe

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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskdir = "C:\\Windows\\system32\\taskdir.exe"	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\taskdir.dll	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
File created	C:\Windows\SysWOW64\taskdir.exe	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
File opened for modification	C:\Windows\SysWOW64\taskdir.exe	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
File created	C:\Windows\SysWOW64\taskdir.exe	taskdir.exe
File created	C:\Windows\SysWOW64\zlbw.dll	taskdir.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2132-0-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2132-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2132-1-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/files/0x000200000001e934-16.dat	upx
behavioral2/memory/2132-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4332-20-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4332-22-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4332-24-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4332-32-0x0000000000400000-0x0000000000490000-memory.dmp	upx

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	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskdir.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
Token: SeDebugPrivilege	4332	taskdir.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
4332	taskdir.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 4332	2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe	95
PID 2132 wrote to memory of 4332	2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe	95
PID 2132 wrote to memory of 4332	2132	JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f2ed1b899c1fc62c0e081a8d24fc455.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Windows\SysWOW64\taskdir.exe
  taskdir.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\taskdir.dll

Filesize
4KB

MD5
f3d0c43986004a77e4b3425ac7b780a5

SHA1
21ccfb692a61b78a422eccb6429153db18f81757

SHA256
2097bcb221365f0523b6ff64ec6965dc8e541b44291261374c0f92354c7b9e6c

SHA512
e5e2c03b9a3281af5df3ee80721ef6756b1ba6a39c90d164ce1bc5b5487dcb4f005675596a00f941d9917bc3ea57049a00d8c806bd52b02ad9e2db8d8b13bd7c

Download Submit
C:\Windows\SysWOW64\taskdir.exe

Filesize
49KB

MD5
6f2ed1b899c1fc62c0e081a8d24fc455

SHA1
14a939196a91f40156b58f19d90a94ca37186b33

SHA256
a7f413018c2a419f2c035493f53145bf0da2c0e3cb91dbd03bc561df4e97eee6

SHA512
3152acd97167a050531c8fd8598fef1e1daaf0585867e8c48a0ffde2a3022d4e0239dae62c22be164722555554ad6f28bf3b957bbb7d547e16b3788134c18401

Download Submit
C:\Windows\SysWOW64\zlbw.dll

Filesize
45KB

MD5
f42601d4ac18bb06d830b6f8e4500adf

SHA1
66ff00d72ed68fa417638b514610c7cf611ddb90

SHA256
2c54ec6433444a5173a38c75f46c8bec63f90c3ed6efea20beac76c67bc27c95

SHA512
8011e932f363fd5730a2cf27ca36a8b62e1c1e61d188bb08b6aad927e2b1a06f8b2ee1c26fff4863fa99d1675fc72d4159b331a3ae25acee0b18e3e41dcb741f

Download Submit
memory/2132-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2132-6-0x00000000005F0000-0x00000000005F5000-memory.dmp

Filesize
20KB

Download
memory/2132-1-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2132-8-0x00000000005F0000-0x00000000005F5000-memory.dmp

Filesize
20KB

Download
memory/2132-15-0x00000000005F0000-0x00000000005F5000-memory.dmp

Filesize
20KB

Download
memory/2132-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2132-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4332-21-0x00000000004F0000-0x00000000004F5000-memory.dmp

Filesize
20KB

Download
memory/4332-20-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4332-22-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4332-23-0x00000000004F0000-0x00000000004F5000-memory.dmp

Filesize
20KB

Download
memory/4332-24-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4332-32-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads