modiloader | 4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-01-2025 22:00

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General

Target

4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe
Size

90KB
MD5

bc823685e7e800ca81fd7ba90d5300ab
SHA1

c9180d52d89468f8fa67faff9e551c5628bace39
SHA256

4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040
SHA512

e6436235980328042eeb0d01b017934095ebda4ea5d0aff9d944be22de1fbd30aa88d41f1f5d737ab79054bfbcdbb2d77039bf05e3c4370cf4979f8c52bf0263
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD2:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3M

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/4088-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4088-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4088-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4088-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe

Executes dropped EXE 3 IoCs

pid	Process
5084	csrsll.exe
2860	csrsll.exe
4088	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-1-5-21-4050598569-1597076380-177084960-1000\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 3288 set thread context of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 5084 set thread context of 2860	5084	csrsll.exe	93
PID 5084 set thread context of 4088	5084	csrsll.exe	94

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3288-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1516-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1516-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1516-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3288-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb2-29.dat	upx
behavioral2/memory/1516-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5084-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5084-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4088-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4088-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4088-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5084-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4088-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4088-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1516-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2860-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4088-62-0x0000000000400000-0x0000000000414000-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	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.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	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe
Token: SeDebugPrivilege	2860	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe
1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe
5084	csrsll.exe
2860	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 3288 wrote to memory of 1516	3288	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	82
PID 1516 wrote to memory of 1468	1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	83
PID 1516 wrote to memory of 1468	1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	83
PID 1516 wrote to memory of 1468	1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	83
PID 1468 wrote to memory of 3988	1468	cmd.exe	86
PID 1468 wrote to memory of 3988	1468	cmd.exe	86
PID 1468 wrote to memory of 3988	1468	cmd.exe	86
PID 1516 wrote to memory of 5084	1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	87
PID 1516 wrote to memory of 5084	1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	87
PID 1516 wrote to memory of 5084	1516	4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe	87
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 2860	5084	csrsll.exe	93
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94
PID 5084 wrote to memory of 4088	5084	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe
"C:\Users\Admin\AppData\Local\Temp\4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Local\Temp\4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe
  "C:\Users\Admin\AppData\Local\Temp\4fd4d4ae58819dab6eb2ea9b1a2c3640df4e791c1c325fdf4d8fe449a742f040.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VBTXS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1468
  - - 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:3988
- - 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:5084
  - - 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:2860
  - - 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:4088

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\VBTXS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
74fff0d2d45ea819fdc3adf15169a561

SHA1
08736d1c919f0b9da9ee379d74774ce22c9a6e46

SHA256
2ef3d8fac9882d812c8ef7627a328728bc6682a193bd3b4c686e7efc9b5fa30a

SHA512
85fd17082d544e46ba605a497adc976b134883091a8c4cced51a323210d35713dc0f21a5e2be70e14435219714415042b51f91f50937cdb4f01ae24316bb04aa

Download Submit
memory/1516-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1516-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1516-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1516-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1516-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2860-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3288-6-0x0000000002A90000-0x0000000002A92000-memory.dmp

Filesize
8KB

Download
memory/3288-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3288-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3288-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3288-4-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/3288-3-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/4088-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4088-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4088-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4088-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4088-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4088-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5084-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5084-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5084-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads