modiloader | be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0

Analysis

max time kernel
120s
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
05-12-2024 13:48

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General

Target

be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe
Size

90KB
MD5

1082cfd7b9f04f0c8e28aa134b1a4519
SHA1

a43572dbe622e03ea7dfe9ed3856a7213c2e9544
SHA256

be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0
SHA512

928efc3d86e3e28f327300a86d586332c88c15fc0b81bdb5cd67a4705ea8d7fa65aa2ec2749db0041f10528ec5d5154dcefe70a34393000ea9d9e98790021855
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDT:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d

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/952-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/952-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/952-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/952-62-0x0000000000400000-0x0000000000414000-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	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe

Executes dropped EXE 3 IoCs

pid	Process
2176	csrsll.exe
3176	csrsll.exe
952	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 2240 set thread context of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2176 set thread context of 3176	2176	csrsll.exe	93
PID 2176 set thread context of 952	2176	csrsll.exe	94

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2240-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2240-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3392-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3392-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2240-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3392-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b8f-29.dat	upx
behavioral2/memory/3392-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2176-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2176-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/952-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/952-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/952-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/952-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2176-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/952-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3392-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3176-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/952-62-0x0000000000400000-0x0000000000414000-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	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.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	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe
Token: SeDebugPrivilege	3176	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe
3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe
2176	csrsll.exe
3176	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 2240 wrote to memory of 3392	2240	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	82
PID 3392 wrote to memory of 3560	3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	83
PID 3392 wrote to memory of 3560	3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	83
PID 3392 wrote to memory of 3560	3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	83
PID 3560 wrote to memory of 3736	3560	cmd.exe	86
PID 3560 wrote to memory of 3736	3560	cmd.exe	86
PID 3560 wrote to memory of 3736	3560	cmd.exe	86
PID 3392 wrote to memory of 2176	3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	87
PID 3392 wrote to memory of 2176	3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	87
PID 3392 wrote to memory of 2176	3392	be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe	87
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 3176	2176	csrsll.exe	93
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94
PID 2176 wrote to memory of 952	2176	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe
"C:\Users\Admin\AppData\Local\Temp\be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe
  "C:\Users\Admin\AppData\Local\Temp\be87c8ff58be68c990f6d6611a91fb297d43ab56c18080c8fe29e3b8be404eb0.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3392
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EULAK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3560
  - - 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:3736
- - 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:2176
  - - 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:3176
  - - 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:952

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\EULAK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6472ede12e1825e4a2e38b1c5a253520

SHA1
64d9fe1359146d2cb3b0e94b5694c71dfff555f6

SHA256
ff4b4010df5a27151329e7144ef88f959ac7cae5d5655ff9269c2d155c333015

SHA512
7f3570cafa4bea86eed6726e8d10d31f31c8e52e6a7b6cc720af602ba287089fc74680c7a700d1f1ce4db57b2ef6f0b2627dddeb0f816467db7d4ac400cf00f8

Download Submit
memory/952-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/952-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/952-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/952-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/952-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/952-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2176-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2176-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2176-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2240-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2240-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2240-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2240-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2240-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/2240-5-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/3176-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3392-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3392-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3392-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3392-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3392-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads