ba26e3ef16727597c94dbd44a7e8c9bf20235fb89dc3ff7b903ede549b1344bb

Analysis

max time kernel
151s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 00:28

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General

Target

21b48351968b6204ff23156e75a750f4.exe
Size

5.0MB
MD5

21b48351968b6204ff23156e75a750f4
SHA1

06dc472c06719b8c594d88e29032b702375e5a36
SHA256

ba26e3ef16727597c94dbd44a7e8c9bf20235fb89dc3ff7b903ede549b1344bb
SHA512

2e32875203010fb149eb4baa96dce90c2c47929fd8d71b73fccaeec8b25eb9708d4bdeedb709120fb21a1f77da41bb622586e7be16e3096eaa1cd957d8888c44
SSDEEP

98304:A+0Vk2PM/S0VNkd0WRJ4PZ13hvt+cCrLC7HWl4On9nMDdiOZdqyBPSz6GGHrMUoo:A+0GSMkd0Dhvt+gZmlb8dmO9v

Score

8^/10

evasion persistence themida

Malware Config

Signatures

Stops running service(s) 3 TTPs
evasion

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Uses Session Manager for persistence 2 TTPs 3 IoCs

Creates Session Manager registry key to run executable early in system boot.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SESSION MANAGER\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SESSION MANAGER\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\Control\Session Manager\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe

Themida packer 16 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2280-4-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-37-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-38-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-41-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-42-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-43-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-44-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-45-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-46-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-47-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-48-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-49-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-50-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-51-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-52-0x0000000000400000-0x0000000001314000-memory.dmp	themida
behavioral1/memory/2280-53-0x0000000000400000-0x0000000001314000-memory.dmp	themida

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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows32 = "C:\\Arquivos de programas\\Windows32.exe"	21b48351968b6204ff23156e75a750f4.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\reg_0035.txt	21b48351968b6204ff23156e75a750f4.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2688	sc.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2280	21b48351968b6204ff23156e75a750f4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2280	21b48351968b6204ff23156e75a750f4.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2760	2280	21b48351968b6204ff23156e75a750f4.exe	28
PID 2280 wrote to memory of 2760	2280	21b48351968b6204ff23156e75a750f4.exe	28
PID 2280 wrote to memory of 2760	2280	21b48351968b6204ff23156e75a750f4.exe	28
PID 2280 wrote to memory of 2760	2280	21b48351968b6204ff23156e75a750f4.exe	28
PID 2280 wrote to memory of 2688	2280	21b48351968b6204ff23156e75a750f4.exe	30
PID 2280 wrote to memory of 2688	2280	21b48351968b6204ff23156e75a750f4.exe	30
PID 2280 wrote to memory of 2688	2280	21b48351968b6204ff23156e75a750f4.exe	30
PID 2280 wrote to memory of 2688	2280	21b48351968b6204ff23156e75a750f4.exe	30
PID 2280 wrote to memory of 2428	2280	21b48351968b6204ff23156e75a750f4.exe	32
PID 2280 wrote to memory of 2428	2280	21b48351968b6204ff23156e75a750f4.exe	32
PID 2280 wrote to memory of 2428	2280	21b48351968b6204ff23156e75a750f4.exe	32
PID 2280 wrote to memory of 2428	2280	21b48351968b6204ff23156e75a750f4.exe	32
PID 2280 wrote to memory of 2828	2280	21b48351968b6204ff23156e75a750f4.exe	33
PID 2280 wrote to memory of 2828	2280	21b48351968b6204ff23156e75a750f4.exe	33
PID 2280 wrote to memory of 2828	2280	21b48351968b6204ff23156e75a750f4.exe	33
PID 2280 wrote to memory of 2828	2280	21b48351968b6204ff23156e75a750f4.exe	33
PID 2280 wrote to memory of 2596	2280	21b48351968b6204ff23156e75a750f4.exe	35
PID 2280 wrote to memory of 2596	2280	21b48351968b6204ff23156e75a750f4.exe	35
PID 2280 wrote to memory of 2596	2280	21b48351968b6204ff23156e75a750f4.exe	35
PID 2280 wrote to memory of 2596	2280	21b48351968b6204ff23156e75a750f4.exe	35

C:\Users\Admin\AppData\Local\Temp\21b48351968b6204ff23156e75a750f4.exe
"C:\Users\Admin\AppData\Local\Temp\21b48351968b6204ff23156e75a750f4.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /tn startt /tr c:\autoexec.bat /sc onstart /ru system
  2⤵
  - Creates scheduled task(s)
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  sc delete GbpSv
  2⤵
  - Launches sc.exe
  PID:2688
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\ControlSet001\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2428
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\ControlSet002\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2828
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

memory/2280-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2280-1-0x0000000002B50000-0x0000000002C36000-memory.dmp

Filesize
920KB

Download
memory/2280-5-0x0000000005B10000-0x0000000005B11000-memory.dmp

Filesize
4KB

Download
memory/2280-4-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-7-0x0000000005AC0000-0x0000000005AC2000-memory.dmp

Filesize
8KB

Download
memory/2280-6-0x0000000005B00000-0x0000000005B01000-memory.dmp

Filesize
4KB

Download
memory/2280-8-0x0000000005AB0000-0x0000000005AB1000-memory.dmp

Filesize
4KB

Download
memory/2280-10-0x0000000005B80000-0x0000000005B81000-memory.dmp

Filesize
4KB

Download
memory/2280-11-0x0000000005BA0000-0x0000000005BA1000-memory.dmp

Filesize
4KB

Download
memory/2280-12-0x0000000005B90000-0x0000000005B91000-memory.dmp

Filesize
4KB

Download
memory/2280-13-0x0000000005B40000-0x0000000005B41000-memory.dmp

Filesize
4KB

Download
memory/2280-14-0x0000000005BE0000-0x0000000005BE2000-memory.dmp

Filesize
8KB

Download
memory/2280-18-0x0000000005C50000-0x0000000005C51000-memory.dmp

Filesize
4KB

Download
memory/2280-17-0x0000000005BF0000-0x0000000005BF1000-memory.dmp

Filesize
4KB

Download
memory/2280-16-0x0000000005BB0000-0x0000000005BB2000-memory.dmp

Filesize
8KB

Download
memory/2280-15-0x0000000005C90000-0x0000000005C91000-memory.dmp

Filesize
4KB

Download
memory/2280-19-0x0000000005C80000-0x0000000005C81000-memory.dmp

Filesize
4KB

Download
memory/2280-20-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/2280-21-0x0000000005C60000-0x0000000005C61000-memory.dmp

Filesize
4KB

Download
memory/2280-22-0x0000000005C70000-0x0000000005C71000-memory.dmp

Filesize
4KB

Download
memory/2280-23-0x0000000005B70000-0x0000000005B71000-memory.dmp

Filesize
4KB

Download
memory/2280-25-0x0000000005BC0000-0x0000000005BC1000-memory.dmp

Filesize
4KB

Download
memory/2280-24-0x0000000005C20000-0x0000000005C21000-memory.dmp

Filesize
4KB

Download
memory/2280-26-0x0000000005AF0000-0x0000000005AF1000-memory.dmp

Filesize
4KB

Download
memory/2280-27-0x0000000005AE0000-0x0000000005AE1000-memory.dmp

Filesize
4KB

Download
memory/2280-28-0x0000000005AD0000-0x0000000005AD1000-memory.dmp

Filesize
4KB

Download
memory/2280-29-0x0000000005B20000-0x0000000005B21000-memory.dmp

Filesize
4KB

Download
memory/2280-32-0x0000000005BD0000-0x0000000005BD1000-memory.dmp

Filesize
4KB

Download
memory/2280-31-0x0000000005B30000-0x0000000005B31000-memory.dmp

Filesize
4KB

Download
memory/2280-30-0x0000000005C40000-0x0000000005C41000-memory.dmp

Filesize
4KB

Download
memory/2280-33-0x0000000005B60000-0x0000000005B61000-memory.dmp

Filesize
4KB

Download
memory/2280-34-0x0000000005C00000-0x0000000005C01000-memory.dmp

Filesize
4KB

Download
memory/2280-35-0x0000000005C10000-0x0000000005C11000-memory.dmp

Filesize
4KB

Download
memory/2280-36-0x0000000005E30000-0x0000000005E32000-memory.dmp

Filesize
8KB

Download
memory/2280-37-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-38-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-39-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2280-40-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/2280-41-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-42-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-43-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-44-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-45-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-46-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-47-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-48-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-49-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-50-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-51-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-52-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download
memory/2280-53-0x0000000000400000-0x0000000001314000-memory.dmp

Filesize
15.1MB

Download