modiloader | 5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9

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
02-11-2024 11:17

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General

Target

5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe
Size

90KB
MD5

75188e65b37cbc9cb991eb06e20f6ed0
SHA1

d7e3ff84bb649114ab39a6f2a86e7d1a55a00f49
SHA256

5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9
SHA512

c34a8e2195022e587dbfb20f4b0a03d0d14e3e5afe786bcec2e406d49fce681d4d870e38e11aafb72b67a351e3fcfecd5af4472f43bf337314ae4f3af39a8364
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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

Processes:

resource	yara_rule
behavioral2/memory/1136-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1136-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1136-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1136-62-0x0000000000400000-0x0000000000414000-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

Processes:

5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
3784	csrsll.exe
4992	csrsll.exe
1136	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.execsrsll.exe

description	pid	Process	procid_target
PID 2252 set thread context of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 3784 set thread context of 4992	3784	csrsll.exe	102
PID 3784 set thread context of 1136	3784	csrsll.exe	103

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2252-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2252-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4296-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4296-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2252-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4296-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000a000000023ba5-29.dat	upx
behavioral2/memory/3784-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4296-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3784-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3784-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1136-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1136-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1136-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3784-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1136-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1136-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4296-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4992-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1136-62-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.exe5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.execmd.exereg.execsrsll.execsrsll.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.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

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe
Token: SeDebugPrivilege	4992	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.execsrsll.execsrsll.exe

pid	Process
2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe
4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe
3784	csrsll.exe
4992	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 2252 wrote to memory of 4296	2252	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	93
PID 4296 wrote to memory of 5108	4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	94
PID 4296 wrote to memory of 5108	4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	94
PID 4296 wrote to memory of 5108	4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	94
PID 5108 wrote to memory of 3352	5108	cmd.exe	100
PID 5108 wrote to memory of 3352	5108	cmd.exe	100
PID 5108 wrote to memory of 3352	5108	cmd.exe	100
PID 4296 wrote to memory of 3784	4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	101
PID 4296 wrote to memory of 3784	4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	101
PID 4296 wrote to memory of 3784	4296	5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe	101
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 4992	3784	csrsll.exe	102
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103
PID 3784 wrote to memory of 1136	3784	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe
"C:\Users\Admin\AppData\Local\Temp\5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\Temp\5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe
  "C:\Users\Admin\AppData\Local\Temp\5677bc2aab62f902335d3c43b58d57ffe12d61cd8e92e6426dced5075fbce7f9N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4296
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AUVJW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5108
  - - 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:3352
- - 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:3784
  - - 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:4992
  - - 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:1136

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\AUVJW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
acb307ed6574a1ec2026d614cb8a6fc3

SHA1
516c32339dc70645256ecf9160552b374b16215d

SHA256
930517ab5609aa735d77ad1cbacba42f5650728b2f65dc47cb9954ff0c4e299d

SHA512
4f181274f54e5a42f03dc2de19065bb9a7d9a471270c7e6083a275ab28ba745c7e34bd6ed799cbbda8cbf9dc8921f175f50cb865cf8350f0f1931b332da9a533

Download Submit
memory/1136-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1136-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1136-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1136-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1136-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1136-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2252-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2252-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2252-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2252-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2252-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2252-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/3784-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3784-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3784-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3784-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4296-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4296-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4296-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4296-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4296-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4296-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4992-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download