modiloader | f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680d

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
20-12-2024 03:07

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General

Target

f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe
Size

90KB
MD5

b1c57c2a00d8f982d0ed1b9837f6ea80
SHA1

e43c9ea8b2cdc1281bda8e20123ce1fa2a25cde2
SHA256

f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680d
SHA512

b21866fa5d8abe9c0b8ff09be0ae1dc9a98fe7f3de5f6f47dba5844bd745d01ef1ae652ef718a48f70c8583ad37d3797219b1db5720ca5b5328a95af7154133f
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDb:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3p

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/4748-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4748-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4748-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4748-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe

Executes dropped EXE 3 IoCs

pid	Process
1844	csrsll.exe
404	csrsll.exe
4748	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-1-5-21-3756129449-3121373848-4276368241-1000\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 4456 set thread context of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 1844 set thread context of 404	1844	csrsll.exe	97
PID 1844 set thread context of 4748	1844	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4456-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4456-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2648-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2648-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4456-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2648-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000a000000023bc8-29.dat	upx
behavioral2/memory/2648-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4748-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4748-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2648-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4748-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1844-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4748-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4748-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1844-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1844-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/404-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4748-61-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe
Token: SeDebugPrivilege	404	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe
2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe
1844	csrsll.exe
404	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 4456 wrote to memory of 2648	4456	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	84
PID 2648 wrote to memory of 1624	2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	89
PID 2648 wrote to memory of 1624	2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	89
PID 2648 wrote to memory of 1624	2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	89
PID 1624 wrote to memory of 4548	1624	cmd.exe	92
PID 1624 wrote to memory of 4548	1624	cmd.exe	92
PID 1624 wrote to memory of 4548	1624	cmd.exe	92
PID 2648 wrote to memory of 1844	2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	93
PID 2648 wrote to memory of 1844	2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	93
PID 2648 wrote to memory of 1844	2648	f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe	93
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 404	1844	csrsll.exe	97
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98
PID 1844 wrote to memory of 4748	1844	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe
"C:\Users\Admin\AppData\Local\Temp\f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Users\Admin\AppData\Local\Temp\f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe
  "C:\Users\Admin\AppData\Local\Temp\f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680dN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OQCGL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1624
  - - 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:4548
- - 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:1844
  - - 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:404
  - - 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:4748

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\OQCGL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b1c57c2a00d8f982d0ed1b9837f6ea80

SHA1
e43c9ea8b2cdc1281bda8e20123ce1fa2a25cde2

SHA256
f7c2575a19f755912dba0440091490163cfe444ade15d0ac71456025763e680d

SHA512
b21866fa5d8abe9c0b8ff09be0ae1dc9a98fe7f3de5f6f47dba5844bd745d01ef1ae652ef718a48f70c8583ad37d3797219b1db5720ca5b5328a95af7154133f

Download Submit
memory/404-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1844-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1844-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1844-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2648-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2648-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2648-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2648-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2648-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4456-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4456-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4456-5-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/4456-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4456-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/4456-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4748-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4748-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4748-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4748-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4748-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4748-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads