modiloader | 46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 03:15

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General

Target

46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
Size

90KB
MD5

67f5fad6bda2c6b84abc9e0ef42c5dc0
SHA1

ae111c2d963107b3f015296f688e17cc18f903f4
SHA256

46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4
SHA512

2c7f0c9194923d6b74bc6798b0e32ca82ff0cc1de4cbde8b6c806f94e6ce8f16e7ce24df555782ad468676c572158442f4f2b4da28e1ac53908c731156cb44b5
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE37

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/3664-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3664-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3664-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3664-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe

Executes dropped EXE 3 IoCs

pid	Process
976	csrsll.exe
892	csrsll.exe
3664	csrsll.exe

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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3440 set thread context of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 976 set thread context of 892	976	csrsll.exe	95
PID 976 set thread context of 3664	976	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3440-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3440-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4260-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4260-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4260-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3440-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b79-29.dat	upx
behavioral2/memory/4260-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/976-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/976-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3664-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3664-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3664-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3664-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/976-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3664-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4260-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/892-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3664-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe
Token: SeDebugPrivilege	892	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
976	csrsll.exe
892	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 3440 wrote to memory of 4260	3440	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	86
PID 4260 wrote to memory of 3364	4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	88
PID 4260 wrote to memory of 3364	4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	88
PID 4260 wrote to memory of 3364	4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	88
PID 3364 wrote to memory of 3280	3364	cmd.exe	91
PID 3364 wrote to memory of 3280	3364	cmd.exe	91
PID 3364 wrote to memory of 3280	3364	cmd.exe	91
PID 4260 wrote to memory of 976	4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	92
PID 4260 wrote to memory of 976	4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	92
PID 4260 wrote to memory of 976	4260	46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe	92
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 892	976	csrsll.exe	95
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96
PID 976 wrote to memory of 3664	976	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
"C:\Users\Admin\AppData\Local\Temp\46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe
  "C:\Users\Admin\AppData\Local\Temp\46aa823c6f52e97232ef1add3d35e039d2d14b1fc3911143aad964adecaa0cc4N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4260
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WUSXK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3364
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3280
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:976
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:892
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:3664

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\WUSXK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
6fc664040d61bfcf09cb8248cd955185

SHA1
b39e5e582c643709465eb061814c41f3c306a114

SHA256
713d2b7b0084b9e5578fcd6f34703ed8b05f4f6590a988fad4935c74e0e8b9c2

SHA512
7ba21fdfba60a931cb6ab1adddbc1d9f301880d9db4e2649a53edea23e9a1981f9cbb82afa543d0562b23c667842961699b788cbcc1f1db28bcc013ad3780f7f

Download Submit
memory/892-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/976-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/976-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/976-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3440-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3440-6-0x0000000002930000-0x0000000002932000-memory.dmp

Filesize
8KB

Download
memory/3440-5-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/3440-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3440-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3440-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3664-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3664-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3664-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3664-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3664-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3664-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4260-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4260-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4260-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4260-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4260-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads