modiloader | 87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2025 03:25

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General

Target

87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe
Size

90KB
MD5

36fb2fc8d7b9486526ea99b853c946ad
SHA1

9103f1b38a0e1b0e9a44672008145882b268bb84
SHA256

87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c
SHA512

063a6c7129ea588db5568a073639aa62b7ddee363c7a29082d6a6df52c557a4c397d5e5aae20c86678132af759365a11ead05cbc030c665328474b83292370da
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDe:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3o

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/4080-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4080-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4080-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4080-61-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe

Executes dropped EXE 3 IoCs

pid	Process
2300	csrsll.exe
1596	csrsll.exe
4080	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-1-5-21-1045960512-3948844814-3059691613-1000\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 3132 set thread context of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 2300 set thread context of 1596	2300	csrsll.exe	97
PID 2300 set thread context of 4080	2300	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3132-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3132-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/244-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/244-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/244-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3132-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c88-29.dat	upx
behavioral2/memory/244-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2300-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2300-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4080-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4080-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4080-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4080-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4080-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2300-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/244-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1596-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4080-61-0x0000000000400000-0x0000000000414000-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	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.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	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe
Token: SeDebugPrivilege	1596	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe
244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe
2300	csrsll.exe
1596	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 3132 wrote to memory of 244	3132	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	83
PID 244 wrote to memory of 3976	244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	84
PID 244 wrote to memory of 3976	244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	84
PID 244 wrote to memory of 3976	244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	84
PID 3976 wrote to memory of 3444	3976	cmd.exe	88
PID 3976 wrote to memory of 3444	3976	cmd.exe	88
PID 3976 wrote to memory of 3444	3976	cmd.exe	88
PID 244 wrote to memory of 2300	244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	89
PID 244 wrote to memory of 2300	244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	89
PID 244 wrote to memory of 2300	244	87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe	89
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 1596	2300	csrsll.exe	97
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98
PID 2300 wrote to memory of 4080	2300	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe
"C:\Users\Admin\AppData\Local\Temp\87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Users\Admin\AppData\Local\Temp\87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe
  "C:\Users\Admin\AppData\Local\Temp\87bea39a726dda79b91355e0a09799182c6ad9be15d13e5004e7705d1c29b06c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:244
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ANDRN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3976
  - - 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:3444
- - 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:2300
  - - 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:1596
  - - 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:4080

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

Replay Monitor

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
74ed5a8d52332c1268866e48cf57f0d0

SHA1
96d42b1d0dcaf8629614a2c7d9cc69801a7175b6

SHA256
6f5fc9f8899ac202571ab4862d7bbb1d1a40e15d9b61caf250ddf063f83f5615

SHA512
51a819aa5b9a48de3f48dfa30cc8199a787b1a96ec9b3e2573a2e017ae920de12fe3056739354a1370739fff4e8cad47510c871a242f17a8c9316668488ec0c5

Download Submit
memory/244-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/244-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/244-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/244-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/244-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/244-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1596-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2300-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2300-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2300-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3132-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3132-6-0x0000000002A90000-0x0000000002A92000-memory.dmp

Filesize
8KB

Download
memory/3132-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3132-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3132-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/3132-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/4080-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads