693c98209d73e643781f4c8b0b143d61143c8f256f479311def7cbadbee1888e

Analysis

max time kernel
89s
max time network
134s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07/01/2024, 14:29

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General

Target

4939e3970031f5fa049b2fae68069b52.exe
Size

4.5MB
MD5

4939e3970031f5fa049b2fae68069b52
SHA1

758e7a8c35d3a0503191bb1272a9a97e88be6544
SHA256

693c98209d73e643781f4c8b0b143d61143c8f256f479311def7cbadbee1888e
SHA512

caddf036d6826d6a7ff353ae556a78941b5990982409c35b46887ac3ace2432af43b93fe3194a339e392af4527e49ff928bd8d53ed2928b45bb113ae2d40e24c
SSDEEP

98304:vU1FB2INAL29YBwDKeEoGBAcxpba5mgWUZMXfCcNn6w4GZwAGPzx:vUTK29LOroZyamvUZMXfrN6w4G6xzx

Score

8^/10

evasion persistence

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

Adds Run key to start application 2 TTPs 2 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\Winexec32 = "C:\\Documents and Settings\\All Users\\Menu Iniciar\\Programas\\Inicializar\\winexec32.exe"	4939e3970031f5fa049b2fae68069b52.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Winexec32 = "C:\\Documents and Settings\\All Users\\Start Menu\\Programs\\Startup\\winexec32.exe"	4939e3970031f5fa049b2fae68069b52.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wscnntfyyx.dat	4939e3970031f5fa049b2fae68069b52.exe

Launches sc.exe 1 IoCs

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

pid	Process
2736	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
3008	schtasks.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2720	2380	4939e3970031f5fa049b2fae68069b52.exe	28
PID 2380 wrote to memory of 2720	2380	4939e3970031f5fa049b2fae68069b52.exe	28
PID 2380 wrote to memory of 2720	2380	4939e3970031f5fa049b2fae68069b52.exe	28
PID 2380 wrote to memory of 2720	2380	4939e3970031f5fa049b2fae68069b52.exe	28
PID 2380 wrote to memory of 3008	2380	4939e3970031f5fa049b2fae68069b52.exe	30
PID 2380 wrote to memory of 3008	2380	4939e3970031f5fa049b2fae68069b52.exe	30
PID 2380 wrote to memory of 3008	2380	4939e3970031f5fa049b2fae68069b52.exe	30
PID 2380 wrote to memory of 3008	2380	4939e3970031f5fa049b2fae68069b52.exe	30
PID 2380 wrote to memory of 2736	2380	4939e3970031f5fa049b2fae68069b52.exe	31
PID 2380 wrote to memory of 2736	2380	4939e3970031f5fa049b2fae68069b52.exe	31
PID 2380 wrote to memory of 2736	2380	4939e3970031f5fa049b2fae68069b52.exe	31
PID 2380 wrote to memory of 2736	2380	4939e3970031f5fa049b2fae68069b52.exe	31
PID 2380 wrote to memory of 2744	2380	4939e3970031f5fa049b2fae68069b52.exe	36
PID 2380 wrote to memory of 2744	2380	4939e3970031f5fa049b2fae68069b52.exe	36
PID 2380 wrote to memory of 2744	2380	4939e3970031f5fa049b2fae68069b52.exe	36
PID 2380 wrote to memory of 2744	2380	4939e3970031f5fa049b2fae68069b52.exe	36
PID 2380 wrote to memory of 2876	2380	4939e3970031f5fa049b2fae68069b52.exe	35
PID 2380 wrote to memory of 2876	2380	4939e3970031f5fa049b2fae68069b52.exe	35
PID 2380 wrote to memory of 2876	2380	4939e3970031f5fa049b2fae68069b52.exe	35
PID 2380 wrote to memory of 2876	2380	4939e3970031f5fa049b2fae68069b52.exe	35
PID 2380 wrote to memory of 2100	2380	4939e3970031f5fa049b2fae68069b52.exe	33
PID 2380 wrote to memory of 2100	2380	4939e3970031f5fa049b2fae68069b52.exe	33
PID 2380 wrote to memory of 2100	2380	4939e3970031f5fa049b2fae68069b52.exe	33
PID 2380 wrote to memory of 2100	2380	4939e3970031f5fa049b2fae68069b52.exe	33

C:\Users\Admin\AppData\Local\Temp\4939e3970031f5fa049b2fae68069b52.exe
"C:\Users\Admin\AppData\Local\Temp\4939e3970031f5fa049b2fae68069b52.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /delete /TN startt /f
  2⤵
  PID:2720
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /tn startt /tr c:\sys.bat /sc onstart /ru system
  2⤵
  - Creates scheduled task(s)
  PID:3008
- C:\Windows\SysWOW64\sc.exe
  sc delete GbpSv
  2⤵
  - Launches sc.exe
  PID:2736
- 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:2100
- 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:2876
- 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:2744

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/2380-0-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-1-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-2-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-3-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-4-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-5-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-6-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-7-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-8-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-9-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-11-0x00000000775B0000-0x00000000775BA000-memory.dmp

Filesize
40KB

Download
memory/2380-10-0x0000000074F20000-0x0000000074F29000-memory.dmp

Filesize
36KB

Download
memory/2380-12-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2380-13-0x0000000074FF0000-0x0000000074FFC000-memory.dmp

Filesize
48KB

Download
memory/2380-14-0x0000000075590000-0x0000000075680000-memory.dmp

Filesize
960KB

Download
memory/2380-16-0x00000000748E0000-0x0000000074938000-memory.dmp

Filesize
352KB

Download
memory/2380-18-0x0000000074910000-0x0000000074917000-memory.dmp

Filesize
28KB

Download
memory/2380-17-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-19-0x0000000074C10000-0x0000000074C5F000-memory.dmp

Filesize
316KB

Download
memory/2380-20-0x00000000760E0000-0x00000000760E6000-memory.dmp

Filesize
24KB

Download
memory/2380-21-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-22-0x000000007EF50000-0x000000007EFAC000-memory.dmp

Filesize
368KB

Download
memory/2380-23-0x00000000775B0000-0x00000000775BA000-memory.dmp

Filesize
40KB

Download
memory/2380-24-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2380-26-0x0000000075590000-0x0000000075680000-memory.dmp

Filesize
960KB

Download
memory/2380-25-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-27-0x00000000748E0000-0x0000000074938000-memory.dmp

Filesize
352KB

Download
memory/2380-28-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-29-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-30-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-31-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-32-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-33-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-34-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-35-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-36-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-37-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-38-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download
memory/2380-39-0x0000000000400000-0x0000000001E2E000-memory.dmp

Filesize
26.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads