modiloader | 83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364a

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2024 14:04

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General

Target

83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
Size

90KB
MD5

99d2b943caa43113f2f1a59004217520
SHA1

dcd000440d2f5980f85327fb1f40fd5b0872654e
SHA256

83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364a
SHA512

83c9ac523b697d463412c7deae5435d5e13a039a0f61eb59e42ca2fbc2c49c6cd99dfd0b435971914c76f6aadd80fb450bf9ee6ec9a09a917c47680bae9e93ad
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/1408-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1408-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1408-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1408-63-0x0000000000400000-0x0000000000414000-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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe

Executes dropped EXE 3 IoCs

pid	Process
1320	csrsll.exe
456	csrsll.exe
1408	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-1-5-21-1302416131-1437503476-2806442725-1000\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 2852 set thread context of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 1320 set thread context of 456	1320	csrsll.exe	95
PID 1320 set thread context of 1408	1320	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2852-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2852-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1480-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1480-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1480-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2852-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000800000002345b-29.dat	upx
behavioral2/memory/1320-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1480-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1320-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1320-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1408-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1408-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1408-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1408-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1408-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1320-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1480-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/456-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1408-63-0x0000000000400000-0x0000000000414000-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	reg.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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
1320	csrsll.exe
456	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 2852 wrote to memory of 1480	2852	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	86
PID 1480 wrote to memory of 3552	1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	87
PID 1480 wrote to memory of 3552	1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	87
PID 1480 wrote to memory of 3552	1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	87
PID 3552 wrote to memory of 5036	3552	cmd.exe	90
PID 3552 wrote to memory of 5036	3552	cmd.exe	90
PID 3552 wrote to memory of 5036	3552	cmd.exe	90
PID 1480 wrote to memory of 1320	1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	91
PID 1480 wrote to memory of 1320	1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	91
PID 1480 wrote to memory of 1320	1480	83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe	91
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 456	1320	csrsll.exe	95
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96
PID 1320 wrote to memory of 1408	1320	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
"C:\Users\Admin\AppData\Local\Temp\83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe
  "C:\Users\Admin\AppData\Local\Temp\83b729165156b3523ed67086642ead97bc5be9918a16c7851c391ace77d7364aN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1480
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BQRPX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3552
  - - 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:5036
- - 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:1320
  - - 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:456
  - - 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:1408

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\BQRPX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
365f2cdfdd62d822af78679f0fc905b9

SHA1
d6bb00e28359a67392838c72325caf49f6dab3af

SHA256
5e915563fac2717622cff33aec05f7a1f1f596129e70cbccd40414bf3941d70e

SHA512
670584bfdf15562d224eac3de60dd1a3a61847431b7508ce4f951cd2b0e16c899ef07cc6c5509482daebd91e8f8ee5fc27d0b43e6161e13970fad678c15922f8

Download Submit
memory/456-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1320-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1320-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1320-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1320-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1408-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1408-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1408-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1408-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1408-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1408-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1480-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1480-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1480-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1480-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1480-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1480-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2852-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2852-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2852-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2852-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/2852-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/2852-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads