Malware Analysis Report

2024-07-28 12:19

Sample ID 240702-3kmycazdqk
Target 1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe
SHA256 1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc
Tags
upx tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc

Threat Level: Known bad

The file 1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe was found to be: Known bad.

Malicious Activity Summary

upx tinba banker persistence trojan

Tinba / TinyBanker

UPX packed file

Adds Run key to start application

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious use of UnmapMainImage

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-07-02 23:34

Signatures

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-02 23:34

Reported

2024-07-02 23:37

Platform

win7-20240508-en

Max time kernel

149s

Max time network

149s

Command Line

"taskhost.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\47ECA59A = "C:\\Users\\Admin\\AppData\\Roaming\\47ECA59A\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1616 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 1616 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 1616 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 1616 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 1616 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 2760 wrote to memory of 1168 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2760 wrote to memory of 1064 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2760 wrote to memory of 1144 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2760 wrote to memory of 1168 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\system32\taskhost.exe

"taskhost.exe"

C:\Windows\system32\Dwm.exe

"C:\Windows\system32\Dwm.exe"

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe

"C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 spaines.pw udp
US 8.8.8.8:53 uyhgqunqkxnx.pw udp
US 8.8.8.8:53 vcklmnnejwxx.pw udp
US 8.8.8.8:53 cmnsgscccrej.pw udp
US 8.8.8.8:53 evbsdqvgmpph.pw udp
US 8.8.8.8:53 mfueeimvyrsp.pw udp
US 8.8.8.8:53 utmyhnffxpcj.pw udp
US 8.8.8.8:53 fkmmvfeonnyh.pw udp
US 8.8.8.8:53 gfnlmtcolrrb.pw udp
US 8.8.8.8:53 wwgfyvvdtmeq.pw udp

Files

memory/1616-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1616-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1168-4-0x0000000002620000-0x0000000002626000-memory.dmp

memory/1168-3-0x0000000002620000-0x0000000002626000-memory.dmp

memory/1168-2-0x0000000002620000-0x0000000002626000-memory.dmp

memory/1616-5-0x0000000001C20000-0x0000000002620000-memory.dmp

memory/2760-11-0x00000000770D0000-0x0000000077279000-memory.dmp

memory/1168-10-0x0000000077121000-0x0000000077122000-memory.dmp

memory/2760-9-0x00000000772CF000-0x00000000772D1000-memory.dmp

memory/2760-8-0x00000000772CF000-0x00000000772D0000-memory.dmp

memory/2760-7-0x00000000772D0000-0x00000000772D1000-memory.dmp

memory/2760-6-0x00000000000B0000-0x00000000000B6000-memory.dmp

memory/1616-12-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1616-13-0x0000000001C20000-0x0000000002620000-memory.dmp

memory/1144-20-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1168-22-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/1064-23-0x00000000001E0000-0x00000000001E6000-memory.dmp

memory/1168-26-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/1144-25-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1064-24-0x0000000077121000-0x0000000077122000-memory.dmp

memory/2760-30-0x00000000000B0000-0x00000000000B6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-02 23:34

Reported

2024-07-02 23:37

Platform

win10v2004-20240611-en

Max time kernel

137s

Max time network

104s

Command Line

sihost.exe

Signatures

Tinba / TinyBanker

trojan banker tinba

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7F0F57AA = "C:\\Users\\Admin\\AppData\\Roaming\\7F0F57AA\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\winver.exe

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Windows\Explorer.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4872 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 4872 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 4872 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 4872 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe C:\Windows\SysWOW64\winver.exe
PID 3516 wrote to memory of 3520 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 3516 wrote to memory of 3056 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\sihost.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe

"C:\Users\Admin\AppData\Local\Temp\1c2586ca619841396d6e00fd34d4a6242920982ab37304856c3210acc964e7cc.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3516 -ip 3516

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
BE 88.221.83.200:443 www.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 200.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/4872-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4872-1-0x0000000000580000-0x0000000000581000-memory.dmp

memory/3520-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/3520-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/4872-4-0x00000000021F0000-0x0000000002BF0000-memory.dmp

memory/3520-7-0x00007FF9F672C000-0x00007FF9F672D000-memory.dmp

memory/3520-6-0x00007FF9F672D000-0x00007FF9F672E000-memory.dmp

memory/3516-5-0x0000000077DB2000-0x0000000077DB3000-memory.dmp

memory/3516-8-0x00007FF9F6690000-0x00007FF9F6885000-memory.dmp

memory/3520-9-0x00007FF9F68C0000-0x00007FF9F68C1000-memory.dmp

memory/4872-11-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4872-12-0x00000000021F0000-0x0000000002BF0000-memory.dmp

memory/3520-13-0x00007FF9F68A0000-0x00007FF9F68A1000-memory.dmp

memory/3516-15-0x0000000000CB0000-0x0000000000CB6000-memory.dmp

memory/3056-17-0x00000000002E0000-0x00000000002E6000-memory.dmp

memory/3516-18-0x0000000000CB0000-0x0000000000CB6000-memory.dmp

memory/3056-20-0x00007FF9F68B0000-0x00007FF9F68B1000-memory.dmp