modiloader | 83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07c

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2024, 06:24

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General

Target

83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
Size

90KB
MD5

21998c4259aa218ed4eb939243d40c80
SHA1

a958a7d2fdde5ca49303d6350c270a2a63753464
SHA256

83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07c
SHA512

dfa66b2a28ed4960e2871d0299c7820c896dbfb48475f23caa9163e190d3318caa726177433f138b655cfefaf3b02dab7aa803f7c4874233c3d9ce733e0e5ce6
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 family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/2980-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2980-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2980-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2980-62-0x0000000000400000-0x0000000000414000-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	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe

Executes dropped EXE 3 IoCs

pid	Process
3140	csrsll.exe
404	csrsll.exe
2980	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 3712 set thread context of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3140 set thread context of 404	3140	csrsll.exe	97
PID 3140 set thread context of 2980	3140	csrsll.exe	98

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3712-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3712-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3948-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3948-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3712-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3948-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b94-29.dat	upx
behavioral2/memory/3140-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3948-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3140-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3140-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2980-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2980-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2980-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2980-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2980-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3140-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3948-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/404-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2980-62-0x0000000000400000-0x0000000000414000-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	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
3140	csrsll.exe
404	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3712 wrote to memory of 3948	3712	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	88
PID 3948 wrote to memory of 964	3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	89
PID 3948 wrote to memory of 964	3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	89
PID 3948 wrote to memory of 964	3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	89
PID 964 wrote to memory of 3020	964	cmd.exe	93
PID 964 wrote to memory of 3020	964	cmd.exe	93
PID 964 wrote to memory of 3020	964	cmd.exe	93
PID 3948 wrote to memory of 3140	3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	94
PID 3948 wrote to memory of 3140	3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	94
PID 3948 wrote to memory of 3140	3948	83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe	94
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 404	3140	csrsll.exe	97
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98
PID 3140 wrote to memory of 2980	3140	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
"C:\Users\Admin\AppData\Local\Temp\83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Users\Admin\AppData\Local\Temp\83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe
  "C:\Users\Admin\AppData\Local\Temp\83f90cbb6a23f75ecc3c89f60877fbbb2cd466bfe6a941c5dead988adc50f07cN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JXENW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:964
  - - 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:3020
- - 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:3140
  - - 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:404
  - - 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:2980

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\JXENW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6289ce65f28576ef1168a60108b86a61

SHA1
78362138dc35bc062989490f153d330e6af5efab

SHA256
e940e09d610cde1a65f8f2ad94209c0a92340cb1e156ec068a643835c3161e1d

SHA512
15a94001bd5137b85e9e87d4375d9c1e1ec7a2b96856643c814ca504b0e365a46c2a31d55b4f8c6f10a1e95d8cebd4aedff2955be976f3dfeedfddbc33a8b4d3

Download Submit
memory/404-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2980-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2980-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2980-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2980-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2980-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2980-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3140-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3140-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3140-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3140-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3712-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3712-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3712-5-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/3712-6-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/3712-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3712-3-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/3948-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3948-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3948-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3948-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3948-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads