modiloader | b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6

Analysis

max time kernel
149s
max time network
151s
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, 02:28

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General

Target

b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe
Size

90KB
MD5

ab9369adbdb902063a530d8ec275936f
SHA1

69756d0d73155497dcebc876511258a35593fc9e
SHA256

b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6
SHA512

c907d058f2a856b7d8e8f61ac153cb1a6235bf7c23a3e7bc4c08cd28f9e6c8cbdc825ccf647d22226f4f02096d43543f703ce6b499572a87cf862535c08cf048
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDN:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3j

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/4028-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4028-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4028-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4028-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe

Executes dropped EXE 3 IoCs

pid	Process
1640	csrsll.exe
2312	csrsll.exe
4028	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 3824 set thread context of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 1640 set thread context of 2312	1640	csrsll.exe	92
PID 1640 set thread context of 4028	1640	csrsll.exe	93

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3824-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3824-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3700-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3700-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3824-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3700-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb4-30.dat	upx
behavioral2/memory/3700-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1640-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1640-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4028-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4028-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4028-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4028-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4028-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1640-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3700-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2312-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4028-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.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	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe
Token: SeDebugPrivilege	2312	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe
3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe
1640	csrsll.exe
2312	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3824 wrote to memory of 3700	3824	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	82
PID 3700 wrote to memory of 4124	3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	83
PID 3700 wrote to memory of 4124	3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	83
PID 3700 wrote to memory of 4124	3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	83
PID 4124 wrote to memory of 2752	4124	cmd.exe	86
PID 4124 wrote to memory of 2752	4124	cmd.exe	86
PID 4124 wrote to memory of 2752	4124	cmd.exe	86
PID 3700 wrote to memory of 1640	3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	87
PID 3700 wrote to memory of 1640	3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	87
PID 3700 wrote to memory of 1640	3700	b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe	87
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 2312	1640	csrsll.exe	92
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93
PID 1640 wrote to memory of 4028	1640	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe
"C:\Users\Admin\AppData\Local\Temp\b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Local\Temp\b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe
  "C:\Users\Admin\AppData\Local\Temp\b3b80e1ba6adee9e24344587ea34fcab51d34dd8c047cc29b65afe993eeb99a6.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3700
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WCUYT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4124
  - - 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:2752
- - 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:1640
  - - 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:2312
  - - 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:4028

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\WCUYT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e972baf3593549dca0277cbfd8ba1f34

SHA1
fb8c96990faf50739b4bdd58fbc47038612b087d

SHA256
1a1fa58e2e7131ca548a144c1305646e17a34403e95a982799da15c7d004aa3e

SHA512
94bac06c65a1e9104451ee7ff8326044e22f2163bb1e35cc439c7f260561869d1de0f1c2078a68628a804233d299ad7f05e91b48e6e23f99b3d420a94a2297d4

Download Submit
memory/1640-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1640-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1640-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2312-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3824-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/3824-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3824-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3824-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3824-7-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3824-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/3824-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4028-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4028-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4028-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4028-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4028-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4028-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads