tinba | 21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112

Analysis

max time kernel
105s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 19:34

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General

Target

21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe
Size

89KB
MD5

9406e631bc7280257aaf819dc14dd160
SHA1

6dc27393b39e3d6051a926704d7763e01898b64d
SHA256

21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112
SHA512

69831e195e51aed2c6dfcc932dfee97d12b8aa4fc1695fbbfecc4a8b14d205714447121bc2d46c2e673c1d4a7704f34a348d8f9fb5c5e34fec7d4bf985d668c1
SSDEEP

1536:X1+mFM2HXKZgixhIksu+XM5/HtAQ9Jox7q:F+4MJIkLZJNAQ9Jo9q

Score

10^/10

tinba banker discovery persistence trojan upx

Malware Config

Signatures

Tinba / TinyBanker
Banking trojan which uses packet sniffing to steal data.
trojan banker tinba
Tinba family
tinba

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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\95806579 = "C:\\Users\\Admin\\AppData\\Roaming\\95806579\\bin.exe"	winver.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4720-0-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4008	1296	WerFault.exe	84

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	21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1296	winver.exe
1296	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1296	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 1296	4720	21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe	84
PID 4720 wrote to memory of 1296	4720	21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe	84
PID 4720 wrote to memory of 1296	4720	21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe	84
PID 4720 wrote to memory of 1296	4720	21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe	84
PID 1296 wrote to memory of 3520	1296	winver.exe	56
PID 1296 wrote to memory of 2712	1296	winver.exe	45

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2712

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3520
- C:\Users\Admin\AppData\Local\Temp\21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe
  "C:\Users\Admin\AppData\Local\Temp\21ed83dee79da533c27f042961468e5dfd9f14f4fc5a3f8178609bb14bc4d112N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4720
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:1296
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1296 -s 352
      4⤵
      Program crash
      PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1296 -ip 1296
1⤵
PID:2332

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

Replay Monitor

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Downloads

memory/1296-5-0x00000000772D2000-0x00000000772D3000-memory.dmp

Filesize
4KB

Download
memory/1296-15-0x0000000000990000-0x0000000000996000-memory.dmp

Filesize
24KB

Download
memory/1296-12-0x0000000000990000-0x0000000000996000-memory.dmp

Filesize
24KB

Download
memory/1296-8-0x00007FFACA290000-0x00007FFACA485000-memory.dmp

Filesize
2.0MB

Download
memory/2712-14-0x0000000000FF0000-0x0000000000FF6000-memory.dmp

Filesize
24KB

Download
memory/3520-6-0x00007FFACA32D000-0x00007FFACA32E000-memory.dmp

Filesize
4KB

Download
memory/3520-7-0x00007FFACA32C000-0x00007FFACA32D000-memory.dmp

Filesize
4KB

Download
memory/3520-2-0x0000000000F20000-0x0000000000F26000-memory.dmp

Filesize
24KB

Download
memory/3520-3-0x0000000000F20000-0x0000000000F26000-memory.dmp

Filesize
24KB

Download
memory/4720-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4720-4-0x00000000022C0000-0x0000000002CC0000-memory.dmp

Filesize
10.0MB

Download
memory/4720-9-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4720-10-0x00000000022C0000-0x0000000002CC0000-memory.dmp

Filesize
10.0MB

Download
memory/4720-1-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download