modiloader | 51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 08:32

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General

Target

51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe
Size

90KB
MD5

553601308c0fa602c561d5dfed8e7d34
SHA1

bc79e83bb6f44e24a001cf321bf8f12c21663d49
SHA256

51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939
SHA512

6fad6a5d6fcd9b4ebce440fe655763612ddd5998708b71111f740c376ddbc32c185fd1ea563b69d44c581dacfecfa222ca71cb737d1e76feda14d0f7af3b0920
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD8:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3+

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/4132-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4132-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4132-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4132-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe

Executes dropped EXE 3 IoCs

pid	Process
1932	csrsll.exe
4444	csrsll.exe
4132	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-1-5-21-3227495264-2217614367-4027411560-1000\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 4876 set thread context of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 1932 set thread context of 4444	1932	csrsll.exe	95
PID 1932 set thread context of 4132	1932	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4876-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4876-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3440-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3440-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4876-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3440-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b80-29.dat	upx
behavioral2/memory/3440-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1932-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1932-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4132-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4132-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4132-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4132-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1932-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4132-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3440-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4444-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4132-63-0x0000000000400000-0x0000000000414000-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	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.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	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe
Token: SeDebugPrivilege	4444	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe
3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe
1932	csrsll.exe
4444	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 4876 wrote to memory of 3440	4876	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	86
PID 3440 wrote to memory of 4492	3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	88
PID 3440 wrote to memory of 4492	3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	88
PID 3440 wrote to memory of 4492	3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	88
PID 4492 wrote to memory of 2192	4492	cmd.exe	91
PID 4492 wrote to memory of 2192	4492	cmd.exe	91
PID 4492 wrote to memory of 2192	4492	cmd.exe	91
PID 3440 wrote to memory of 1932	3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	92
PID 3440 wrote to memory of 1932	3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	92
PID 3440 wrote to memory of 1932	3440	51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe	92
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4444	1932	csrsll.exe	95
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96
PID 1932 wrote to memory of 4132	1932	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe
"C:\Users\Admin\AppData\Local\Temp\51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Users\Admin\AppData\Local\Temp\51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe
  "C:\Users\Admin\AppData\Local\Temp\51e25ef9d1ee05a0daeebf50a2fbdfc7936873dd6398e55f8d0ea64252003939.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3440
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LHGUB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4492
  - - 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:2192
- - 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:1932
  - - 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:4444
  - - 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:4132

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\LHGUB.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6d8077f58d031deb55ef901c1e727f41

SHA1
434e6719adde029328aebb2fbdbfdc1ab3dc3928

SHA256
b96811669bb97e9a455b29a79469f92acf0dea500b22a4d289ae2813c2d663ad

SHA512
2e24cb264650309862a4b64a61b832d9ebb210bd22d26e4f545502671a24a43c2e50d5c40c0c66e79afceec693f30b96ee2c42d204788d16e12c756fdef73096

Download Submit
memory/1932-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1932-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1932-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3440-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3440-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3440-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3440-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3440-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4132-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4132-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4132-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4132-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4132-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4132-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4444-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4876-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/4876-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/4876-5-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/4876-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4876-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4876-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads