modiloader | 8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59

Analysis

max time kernel
120s
max time network
118s
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 01:01

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General

Target

8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe
Size

90KB
MD5

82a09ca4d3cf965d3c1c1a75a95f8550
SHA1

7ed4cfe1c286082818114426154bf85c7e072e57
SHA256

8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59
SHA512

3bf05fee0d20091bd510f57ca4446cfed7dd3620403a743429680a9428c5239549d107092638fb10a78ef4489be543b4b49ef99ca55af5feae3c694d341768f2
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDf:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3t

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/2096-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2096-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2096-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2096-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe

Executes dropped EXE 3 IoCs

pid	Process
4532	csrsll.exe
3988	csrsll.exe
2096	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 1992 set thread context of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 4532 set thread context of 3988	4532	csrsll.exe	97
PID 4532 set thread context of 2096	4532	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1992-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1992-6-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5048-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5048-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5048-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1992-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b86-30.dat	upx
behavioral2/memory/5048-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4532-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4532-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2096-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2096-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2096-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4532-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5048-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3988-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2096-62-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe
Token: SeDebugPrivilege	3988	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe
5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe
4532	csrsll.exe
3988	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 1992 wrote to memory of 5048	1992	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	86
PID 5048 wrote to memory of 2080	5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	89
PID 5048 wrote to memory of 2080	5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	89
PID 5048 wrote to memory of 2080	5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	89
PID 2080 wrote to memory of 2468	2080	cmd.exe	92
PID 2080 wrote to memory of 2468	2080	cmd.exe	92
PID 2080 wrote to memory of 2468	2080	cmd.exe	92
PID 5048 wrote to memory of 4532	5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	93
PID 5048 wrote to memory of 4532	5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	93
PID 5048 wrote to memory of 4532	5048	8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe	93
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 3988	4532	csrsll.exe	97
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98
PID 4532 wrote to memory of 2096	4532	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe
"C:\Users\Admin\AppData\Local\Temp\8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe
  "C:\Users\Admin\AppData\Local\Temp\8ac49cdec1c2133ac633298fc94fdb9947ed92d98a6495f201356f42155c7d59N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WMIHU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2080
  - - 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:2468
- - 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:4532
  - - 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:3988
  - - 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:2096

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\WMIHU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
927fbca7c0645ac3b104753e8a7fb537

SHA1
35fc87b6ced43e78116aa3a9fc7daa341d98044d

SHA256
6fd1ba5dcba19f12722a3df068dcf0eaaeae297fd06ceff921dd9811069c1161

SHA512
45edc77e9632b5699f84a5c9eea93b76382a057c0074568e88c33c04453e1ed11ec0191af800722c7fa9000c3a86f9cbf3dd9bd51b94f5ef6fa64afa237dcb69

Download Submit
memory/1992-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1992-3-0x00000000022C0000-0x00000000022C2000-memory.dmp

Filesize
8KB

Download
memory/1992-4-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/1992-5-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/1992-7-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1992-6-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1992-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2096-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2096-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2096-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2096-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2096-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3988-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4532-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4532-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4532-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5048-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5048-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5048-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5048-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5048-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads