modiloader | 101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/11/2024, 19:44

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General

Target
101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe
Size 90KB
Sample241122-yf8l2axmat
SHA256 101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419
MD5 718f54b861f63d41368742a197fd6d22
SHA1 849cb5eb8086ff09bb71591c2fc9559a18c15dde
SHA512 7a5e31e5d6f97cbde906ae60b487e5a5c257904aa2f14f0d02e4b81b26ad07f3ddd26c900fdb12eb6f3861b3cf8ed41bfcbdbf70999d48426b829dee26d40f3b
SSDEEP 1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDV:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3H
MD5 SHA1 SHA512 SSDEEP

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/1628-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1628-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1628-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1628-60-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe

Executes dropped EXE 3 IoCs

pid	Process
2056	csrsll.exe
4448	csrsll.exe
1628	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-1-5-21-4089630652-1596403869-279772308-1000\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 1752 set thread context of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 2056 set thread context of 4448	2056	csrsll.exe	95
PID 2056 set thread context of 1628	2056	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1752-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1752-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3424-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3424-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3424-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1752-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c95-28.dat	upx
behavioral2/memory/3424-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2056-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2056-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1628-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1628-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1628-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1628-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1628-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2056-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3424-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4448-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1628-60-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe
Token: SeDebugPrivilege	4448	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe
3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe
2056	csrsll.exe
4448	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 1752 wrote to memory of 3424	1752	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	86
PID 3424 wrote to memory of 1504	3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	88
PID 3424 wrote to memory of 1504	3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	88
PID 3424 wrote to memory of 1504	3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	88
PID 1504 wrote to memory of 540	1504	cmd.exe	91
PID 1504 wrote to memory of 540	1504	cmd.exe	91
PID 1504 wrote to memory of 540	1504	cmd.exe	91
PID 3424 wrote to memory of 2056	3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	92
PID 3424 wrote to memory of 2056	3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	92
PID 3424 wrote to memory of 2056	3424	101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe	92
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 4448	2056	csrsll.exe	95
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96
PID 2056 wrote to memory of 1628	2056	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe
"C:\Users\Admin\AppData\Local\Temp\101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Users\Admin\AppData\Local\Temp\101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe
  "C:\Users\Admin\AppData\Local\Temp\101595ccb9c84f03b395b7c44d9955a3478909f98ee597f31c30135647722419.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3424
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GHYGH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1504
  - - 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:540
- - 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:2056
  - - 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:4448
  - - 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:1628

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

GHYGH.txt

Path C:\Users\Admin\AppData\Local\Temp\GHYGH.txt
Size 145B
SHA256 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff
MD5 4eb61ec7816c34ec8c125acadc57ec1b
SHA1 b0015cc865c0bb1a027be663027d3829401a31cc
SHA512 f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1
MD5 SHA1 SHA512

Submit Download

csrsll.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Size 90KB
SHA256 34c1983f2fabb9e542eca00918a97c90eda217aba1e380c135560e9cafb868ce
MD5 161039c374ee56614931e39e16983fa6
SHA1 ee12addb32b47131b538477e79d22f4dbb2a42e4
SHA512 20221cfb9530f636e3e4cd7d9a565535bca89471920d6a252d18b57db34ac4c9259d4225b4ca51637c88379127c3e8d2843071c835c3ea1e680e571a891b744f
SSDEEP 1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD/:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1628-44-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1628-52-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1628-60-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/1628-55-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1628-56-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/1628-51-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1752-14-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/1752-6-0x0000000002340000-0x0000000002342000-memory.dmp

Download

memory/1752-3-0x0000000002300000-0x0000000002302000-memory.dmp

Download

memory/1752-5-0x0000000000400000-0x0000000000453000-memory.dmp

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memory/1752-4-0x0000000002310000-0x0000000002312000-memory.dmp

Download

memory/1752-0-0x0000000000400000-0x0000000000453000-memory.dmp

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memory/2056-39-0x0000000000400000-0x0000000000453000-memory.dmp

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memory/2056-40-0x0000000000400000-0x0000000000453000-memory.dmp

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memory/2056-54-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/3424-10-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3424-9-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3424-7-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3424-58-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3424-38-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/4448-59-0x0000000000400000-0x000000000040B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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