modiloader | 03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-12-2024 19:12

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General

Target

03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe
Size

90KB
MD5

d39b8a1fbe55b874181bf7afdb0a9621
SHA1

ec91f4e6e29a911df36e6729408bbffe6fd330ee
SHA256

03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a
SHA512

1f13e8477816e5bca14c2cbf90d19a56d031ebb572d8ba7b2a83690bf632b06dcabceebb43004e8961391149b833a146e428a13f7bd70a0d177b1f79c85a433e
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDT:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3N

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/3744-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3744-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3744-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3744-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe

Executes dropped EXE 3 IoCs

pid	Process
2596	csrsll.exe
4280	csrsll.exe
3744	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-1-5-21-3442511616-637977696-3186306149-1000\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 2340 set thread context of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2596 set thread context of 4280	2596	csrsll.exe	95
PID 2596 set thread context of 3744	2596	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2340-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2340-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4888-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4888-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2340-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023ca9-29.dat	upx
behavioral2/memory/4888-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2596-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2596-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3744-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3744-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3744-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3744-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3744-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2596-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4888-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4280-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3744-62-0x0000000000400000-0x0000000000414000-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	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.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	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe
Token: SeDebugPrivilege	4280	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe
4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe
2596	csrsll.exe
4280	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 2340 wrote to memory of 4888	2340	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	82
PID 4888 wrote to memory of 4336	4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	85
PID 4888 wrote to memory of 4336	4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	85
PID 4888 wrote to memory of 4336	4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	85
PID 4336 wrote to memory of 1796	4336	cmd.exe	88
PID 4336 wrote to memory of 1796	4336	cmd.exe	88
PID 4336 wrote to memory of 1796	4336	cmd.exe	88
PID 4888 wrote to memory of 2596	4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	89
PID 4888 wrote to memory of 2596	4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	89
PID 4888 wrote to memory of 2596	4888	03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe	89
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 4280	2596	csrsll.exe	95
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96
PID 2596 wrote to memory of 3744	2596	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe
"C:\Users\Admin\AppData\Local\Temp\03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe
  "C:\Users\Admin\AppData\Local\Temp\03fce478cefc5074db517ec60e77681450cbad753258d719880bca94c0b3724a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4888
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CUYTP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4336
  - - 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:1796
- - 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:2596
  - - 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:4280
  - - 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:3744

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\CUYTP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
34ff18ccf6e440c2a6fd3ca7edccf4fb

SHA1
1644fa8a50ccae81c8e22f14e733774f85e1c0d1

SHA256
2ad9ce148eb5220dfbf55d2b4e9f0018ad15ee3e0dff216d906615391a88648c

SHA512
7f38ef683f460ebac50b4de1728100be61052efb63f467c9560c4c3bb020d544ebad5e841eafec6b51cffb0894fcede52855f17020e735fd2502f3582618c152

Download Submit
memory/2340-3-0x0000000002B40000-0x0000000002B42000-memory.dmp

Filesize
8KB

Download
memory/2340-4-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/2340-6-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/2340-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2340-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2340-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2596-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2596-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2596-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3744-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3744-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3744-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3744-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3744-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3744-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4280-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads