tinba | 5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321

Analysis

max time kernel
114s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 05:48

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General

Target
5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe
Size 160KB
Sample241003-ghvphsxflq
SHA256 5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321
MD5 1fbd8f220f11df83944595a179ebbcf0
SHA1 9fa45f63be7526a969e37c1737ae7a119fc88344
SHA512 b49040739d6db6f0a0916ee2992458c2d810b0884a77ae3713fa2b5ce2720162589f4263819be758b214d4d4cb8c57a6287bec0246ee40dc4643240f72422263
SSDEEP 1536:dEY+mFM2HXKZgi0Iksu+XM5/HtAQ9J6xph:2Y+4MiIkLZJNAQ9J6v
MD5 SHA1 SHA512 SSDEEP

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

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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\49FACC61 = "C:\\Users\\Admin\\AppData\\Roaming\\49FACC61\\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/4352-0-0x0000000000400000-0x0000000000428000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1304	2900	WerFault.exe	90

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	5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2900	winver.exe
2900	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3460	Explorer.EXE
Token: SeCreatePagefilePrivilege	3460	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2900	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4352 wrote to memory of 2900	4352	5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe	90
PID 4352 wrote to memory of 2900	4352	5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe	90
PID 4352 wrote to memory of 2900	4352	5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe	90
PID 4352 wrote to memory of 2900	4352	5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe	90
PID 2900 wrote to memory of 3460	2900	winver.exe	56
PID 2900 wrote to memory of 2676	2900	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2676

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3460
- C:\Users\Admin\AppData\Local\Temp\5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe
  "C:\Users\Admin\AppData\Local\Temp\5ff0a293ca52a534ad8535568dba3b3938018431f9a6eceb7d477e21e03a8321N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4352
- - 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:2900
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 352
      4⤵
      Program crash
      PID:1304

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4188,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
1⤵
PID:3348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2900 -ip 2900
1⤵
PID:4156

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

memory/2676-13-0x00000000001A0000-0x00000000001A6000-memory.dmp

Download

memory/2900-5-0x0000000077112000-0x0000000077113000-memory.dmp

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memory/2900-14-0x0000000001500000-0x0000000001506000-memory.dmp

Download

memory/2900-11-0x0000000001500000-0x0000000001506000-memory.dmp

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memory/2900-7-0x00007FF856170000-0x00007FF856365000-memory.dmp

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memory/3460-6-0x00007FF85620D000-0x00007FF85620E000-memory.dmp

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memory/3460-3-0x0000000000480000-0x0000000000486000-memory.dmp

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memory/3460-2-0x0000000000480000-0x0000000000486000-memory.dmp

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memory/4352-0-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4352-4-0x00000000022F0000-0x0000000002CF0000-memory.dmp

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memory/4352-8-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4352-9-0x00000000022F0000-0x0000000002CF0000-memory.dmp

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memory/4352-1-0x00000000006D0000-0x00000000006D1000-memory.dmp

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