modiloader | 856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0

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
18-12-2024 23:20

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General

Target

856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe
Size

90KB
MD5

016bcfd3b079d5617d5f8ea7fa1a4916
SHA1

22767adca11cd7e069172b69706073ad8e300b9f
SHA256

856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0
SHA512

a28910e465ee4ed6aca6886546bdd1e3cf520d676cfcc2b7720363669212d8cbabc573a42e37fcbd5d7674a4a0770360e16405bd8bd51134ddef9e1b9c5760bc
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDC:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3E

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/3448-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3448-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3448-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3448-58-0x0000000000400000-0x0000000000414000-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	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe

Executes dropped EXE 3 IoCs

pid	Process
4440	csrsll.exe
4948	csrsll.exe
3448	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 1360 set thread context of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 4440 set thread context of 4948	4440	csrsll.exe	101
PID 4440 set thread context of 3448	4440	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1360-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1360-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3836-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3836-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3836-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1360-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb6-28.dat	upx
behavioral2/memory/3836-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4440-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4440-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3448-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3448-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3448-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4440-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3448-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3448-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3836-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4948-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3448-58-0x0000000000400000-0x0000000000414000-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	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe
Token: SeDebugPrivilege	4948	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe
3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe
4440	csrsll.exe
4948	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 1360 wrote to memory of 3836	1360	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	84
PID 3836 wrote to memory of 904	3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	87
PID 3836 wrote to memory of 904	3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	87
PID 3836 wrote to memory of 904	3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	87
PID 904 wrote to memory of 4688	904	cmd.exe	91
PID 904 wrote to memory of 4688	904	cmd.exe	91
PID 904 wrote to memory of 4688	904	cmd.exe	91
PID 3836 wrote to memory of 4440	3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	93
PID 3836 wrote to memory of 4440	3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	93
PID 3836 wrote to memory of 4440	3836	856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe	93
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 4948	4440	csrsll.exe	101
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102
PID 4440 wrote to memory of 3448	4440	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe
"C:\Users\Admin\AppData\Local\Temp\856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Users\Admin\AppData\Local\Temp\856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe
  "C:\Users\Admin\AppData\Local\Temp\856b606aea0a4549a132eea7f2c50eaa6b328b0fbab80fb4d060ee1070a3e5c0.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3836
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KBTLH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:904
  - - 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:4688
- - 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:4440
  - - 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:4948
  - - 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:3448

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\KBTLH.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
76ec9a02de77880622ddcf9192d7aa82

SHA1
cd897a03dedca2fff87efc7ae09234faf9aff560

SHA256
68a071539bb7f97ee970a9956ab534c36e7422cf0ebf99e5adf57bfbd24a67fe

SHA512
29102f4c13d6a6b5b978939ced3075966bddfa6aa25ae794793a6b380d58137d154538deceab8d729ed2b42ad86a5e6261103e671ae2f46ced922bc05417d1b9

Download Submit
memory/1360-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1360-3-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/1360-4-0x0000000002430000-0x0000000002432000-memory.dmp

Filesize
8KB

Download
memory/1360-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1360-6-0x0000000002450000-0x0000000002452000-memory.dmp

Filesize
8KB

Download
memory/1360-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3448-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3448-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3448-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3448-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3448-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3448-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3836-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3836-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3836-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3836-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3836-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4440-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4440-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4440-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4948-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads