modiloader | f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f

Analysis

max time kernel
120s
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
26-12-2024 15:35

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General

Target

f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
Size

90KB
MD5

7cdb8148385fba1ada9241e9a293313d
SHA1

0f372c5bcc7c6d5578d9a59f9c874b4fc82214b3
SHA256

f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f
SHA512

eef78c4285cdc55c0586e9ccde39a3d6fd25f225531224a407fd636849f35fe3590c0191809b926299da6af3f2d8a0cb29c450c36ab2d1c0d5dcbcb694f54573
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDz:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE39

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/3380-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3380-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3380-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3380-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe

Executes dropped EXE 3 IoCs

pid	Process
4360	csrsll.exe
1720	csrsll.exe
3380	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-1-5-21-2045521122-590294423-3465680274-1000\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 1140 set thread context of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 4360 set thread context of 1720	4360	csrsll.exe	91
PID 4360 set thread context of 3380	4360	csrsll.exe	92

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1140-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1140-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1796-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1796-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1796-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1140-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c76-29.dat	upx
behavioral2/memory/1796-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4360-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4360-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3380-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3380-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4360-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3380-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3380-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1796-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3380-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1720-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3380-61-0x0000000000400000-0x0000000000414000-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	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.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	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe
Token: SeDebugPrivilege	1720	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
4360	csrsll.exe
1720	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1140 wrote to memory of 1796	1140	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 1796 wrote to memory of 3460	1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	85
PID 1796 wrote to memory of 3460	1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	85
PID 1796 wrote to memory of 3460	1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	85
PID 3460 wrote to memory of 1336	3460	cmd.exe	89
PID 3460 wrote to memory of 1336	3460	cmd.exe	89
PID 3460 wrote to memory of 1336	3460	cmd.exe	89
PID 1796 wrote to memory of 4360	1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	90
PID 1796 wrote to memory of 4360	1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	90
PID 1796 wrote to memory of 4360	1796	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	90
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 1720	4360	csrsll.exe	91
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92
PID 4360 wrote to memory of 3380	4360	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
"C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
  "C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VSRVI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3460
  - - 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:1336
- - 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:4360
  - - 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:1720
  - - 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:3380

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\VSRVI.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0f2d1416357e3c7294aac5cc8e8b5529

SHA1
b343fde427e19e9a9503d5de1d36bb93e449ff53

SHA256
c94742c71d722a2408a6ec139e762d8117e8bc01b7224e865a73a69d98ed53f5

SHA512
f58ea097346c52456119c5214eb130978744dadba6c44e8241616e9b126e3eedeb7d918f6a9856a519a703469cd343132fd40d10360031aa8aac760bc8a2b442

Download Submit
memory/1140-3-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1140-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1140-5-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/1140-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/1140-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1140-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1720-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1796-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1796-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1796-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1796-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1796-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3380-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3380-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3380-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3380-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3380-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3380-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4360-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4360-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4360-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads