modiloader | b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d

Analysis

max time kernel
150s
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
26-12-2024 10:25

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General

Target

b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe
Size

90KB
MD5

01c962d6dc135f2f2de6390971268b45
SHA1

3795c787eb5fb0e6d01bbc9a944ae2e44a1a5b5e
SHA256

b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d
SHA512

babd5393b69d65ab6251bb5a801d9079492f51c7ae594939b38cf61501542cd5f932d95bb165bf7262e126ee71731ee7b942e04a3894dd91861a833f98dbb69e
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDm:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3M

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/3324-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3324-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3324-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3324-61-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe

Executes dropped EXE 3 IoCs

pid	Process
3356	csrsll.exe
1856	csrsll.exe
3324	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-1-5-21-940901362-3608833189-1915618603-1000\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 336 set thread context of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 3356 set thread context of 1856	3356	csrsll.exe	101
PID 3356 set thread context of 3324	3356	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/336-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/336-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3848-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3848-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3848-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/336-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cc8-29.dat	upx
behavioral2/memory/3848-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3356-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3356-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3324-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3356-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3324-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3848-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1856-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3324-61-0x0000000000400000-0x0000000000414000-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	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe
Token: SeDebugPrivilege	1856	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe
3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe
3356	csrsll.exe
1856	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 336 wrote to memory of 3848	336	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	89
PID 3848 wrote to memory of 2072	3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	90
PID 3848 wrote to memory of 2072	3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	90
PID 3848 wrote to memory of 2072	3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	90
PID 2072 wrote to memory of 2356	2072	cmd.exe	94
PID 2072 wrote to memory of 2356	2072	cmd.exe	94
PID 2072 wrote to memory of 2356	2072	cmd.exe	94
PID 3848 wrote to memory of 3356	3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	95
PID 3848 wrote to memory of 3356	3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	95
PID 3848 wrote to memory of 3356	3848	b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe	95
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 1856	3356	csrsll.exe	101
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102
PID 3356 wrote to memory of 3324	3356	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe
"C:\Users\Admin\AppData\Local\Temp\b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:336
- C:\Users\Admin\AppData\Local\Temp\b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe
  "C:\Users\Admin\AppData\Local\Temp\b8836b00e5dbcb1ef79323ac0c14943d65e072821cac95166e004adfbddcc07d.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3848
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GOCDW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2072
  - - 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:2356
- - 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:3356
  - - 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:1856
  - - 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:3324

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\GOCDW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
3783de7a44fa632200be10e36ff96032

SHA1
5d18e11ef520a7e66dd37ce0341c839ac4683a0b

SHA256
d6d0915b5f69a3026d743160939b252b2a52a9a837146bea37e3ef6ef56a4823

SHA512
d837ffe7ba96c55c3f1dba3b7b1bc998f3d1dfe0bdd6d62d30a05ec9a14b913a13de180125fcb0eb00357673e36e4cbca3644c57a7380470e1048bf49157c4c6

Download Submit
memory/336-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/336-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/336-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/336-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/336-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/336-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1856-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3356-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3356-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3356-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3848-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3848-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3848-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3848-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3848-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads