modiloader | 5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81

Analysis

max time kernel
119s
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
01/12/2024, 18:03

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General

Target

5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe
Size

90KB
MD5

5642571e913ed9455d2203c1fb59bf62
SHA1

2c1f905fad583fb158917f108905efea8c8a91c7
SHA256

5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81
SHA512

9459bf9ebf85e78febaef541733a2fbcfdf97f952f746410f711bb4ef16d43beb7f5dfefb357c6d192d000d73755e9ad63be326f0e01706e39bb71f39aabcbdb
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDI:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3W

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/928-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/928-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/928-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/928-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe

Executes dropped EXE 3 IoCs

pid	Process
2952	csrsll.exe
1032	csrsll.exe
928	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-1-5-21-3350944739-639801879-157714471-1000\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 3136 set thread context of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 2952 set thread context of 1032	2952	csrsll.exe	102
PID 2952 set thread context of 928	2952	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3136-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3136-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2864-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2864-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2864-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3136-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b8b-30.dat	upx
behavioral2/memory/2864-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2952-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2952-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/928-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/928-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/928-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/928-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/928-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2952-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2864-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1032-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/928-63-0x0000000000400000-0x0000000000414000-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	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe
Token: SeDebugPrivilege	1032	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe
2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe
2952	csrsll.exe
1032	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 3136 wrote to memory of 2864	3136	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	89
PID 2864 wrote to memory of 1848	2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	92
PID 2864 wrote to memory of 1848	2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	92
PID 2864 wrote to memory of 1848	2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	92
PID 1848 wrote to memory of 4540	1848	cmd.exe	96
PID 1848 wrote to memory of 4540	1848	cmd.exe	96
PID 1848 wrote to memory of 4540	1848	cmd.exe	96
PID 2864 wrote to memory of 2952	2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	97
PID 2864 wrote to memory of 2952	2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	97
PID 2864 wrote to memory of 2952	2864	5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe	97
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 1032	2952	csrsll.exe	102
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103
PID 2952 wrote to memory of 928	2952	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe
"C:\Users\Admin\AppData\Local\Temp\5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Users\Admin\AppData\Local\Temp\5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe
  "C:\Users\Admin\AppData\Local\Temp\5f03f7f88c904a6836de000ab6599a4e9a1ee66e7698aaf277e6596e7ded0e81.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CBRSP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1848
  - - 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:4540
- - 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:2952
  - - 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:1032
  - - 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:928

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\CBRSP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e0d2330377678675c31c72cc0f322d9d

SHA1
cbc502305f9ec39dbb0a7898270cf3a7284ac8ed

SHA256
7706073639dd199ddd4582c645278da6be1ec2e4fa74579b161a502ab0be52f3

SHA512
197e668a8c6b9fb587887fa0de3e3cc165eab68096448931d323f9f6339782472094769d36021c4d1c5df348b9ac5d8df54a3ff418d57ee25a8823355bc7184c

Download Submit
memory/928-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/928-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/928-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/928-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/928-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/928-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1032-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2864-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2864-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2864-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2864-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2864-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2952-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2952-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2952-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/3136-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3136-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads