modiloader | a9818490e074aa07c43aafe4059d26ad16214c93ae27743cbdf201f40b3b632d

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 11:39

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General

Target

4f958fa0922c991efd8e869b9b05bef0N.exe
Size

90KB
MD5

4f958fa0922c991efd8e869b9b05bef0
SHA1

bb5ec9e0ed4abef69192b25b026043238b0d65b0
SHA256

a9818490e074aa07c43aafe4059d26ad16214c93ae27743cbdf201f40b3b632d
SHA512

b5f11c4e166b8a836aa1371d2eca70f559e2f6c9ba943a46f900dd16f9590997bfd3d4988fa985e9be37d78679a008f61d4d3148d1746cfccbe6ed8488de4a05
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/3416-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3416-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3416-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3416-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	4f958fa0922c991efd8e869b9b05bef0N.exe

Executes dropped EXE 3 IoCs

pid	Process
3872	csrsll.exe
3012	csrsll.exe
3416	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2216-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2216-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4104-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4104-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2216-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4104-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b0000000233a0-30.dat	upx
behavioral2/memory/3872-38-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4104-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3872-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3872-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3416-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3416-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3416-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3416-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3872-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3416-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4104-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3012-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3416-63-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-2392887640-1187051047-2909758433-1000\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 2216 set thread context of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 3872 set thread context of 3012	3872	csrsll.exe	101
PID 3872 set thread context of 3416	3872	csrsll.exe	102

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f958fa0922c991efd8e869b9b05bef0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f958fa0922c991efd8e869b9b05bef0N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe
Token: SeDebugPrivilege	3012	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2216	4f958fa0922c991efd8e869b9b05bef0N.exe
4104	4f958fa0922c991efd8e869b9b05bef0N.exe
3872	csrsll.exe
3012	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 2216 wrote to memory of 4104	2216	4f958fa0922c991efd8e869b9b05bef0N.exe	93
PID 4104 wrote to memory of 2104	4104	4f958fa0922c991efd8e869b9b05bef0N.exe	94
PID 4104 wrote to memory of 2104	4104	4f958fa0922c991efd8e869b9b05bef0N.exe	94
PID 4104 wrote to memory of 2104	4104	4f958fa0922c991efd8e869b9b05bef0N.exe	94
PID 2104 wrote to memory of 920	2104	cmd.exe	97
PID 2104 wrote to memory of 920	2104	cmd.exe	97
PID 2104 wrote to memory of 920	2104	cmd.exe	97
PID 4104 wrote to memory of 3872	4104	4f958fa0922c991efd8e869b9b05bef0N.exe	98
PID 4104 wrote to memory of 3872	4104	4f958fa0922c991efd8e869b9b05bef0N.exe	98
PID 4104 wrote to memory of 3872	4104	4f958fa0922c991efd8e869b9b05bef0N.exe	98
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3012	3872	csrsll.exe	101
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102
PID 3872 wrote to memory of 3416	3872	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\4f958fa0922c991efd8e869b9b05bef0N.exe
"C:\Users\Admin\AppData\Local\Temp\4f958fa0922c991efd8e869b9b05bef0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\4f958fa0922c991efd8e869b9b05bef0N.exe
  "C:\Users\Admin\AppData\Local\Temp\4f958fa0922c991efd8e869b9b05bef0N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4104
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QVRFS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2104
  - - 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:920
- - 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:3872
  - - 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:3012
  - - 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:3416

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\QVRFS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
105f811ce034712e1e8be317d537a36e

SHA1
3261b0de0a5d8cf8d6c1b345b826f8f31471bd9c

SHA256
45292aa27b4d6993d3f061fe5cd49096c00c107bb28b99801c21f20651339cee

SHA512
c6164901d71ab731cd63be7a61c70b5f6e127d1a67a725db6360d4deb0d3e9a98e645b4f9d9d8cc120b73518efc2448087f033fa1ff44a11ca79ac3406360eaf

Download Submit
memory/2216-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/2216-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/2216-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-7-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/2216-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/3012-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3416-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3416-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3416-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3416-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3416-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3416-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3872-38-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3872-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3872-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3872-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4104-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads