modiloader | bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 10:49

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General

Target

bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe
Size

90KB
MD5

927cb4476dd6fa9ece5ef66e5a9f501d
SHA1

149988ca7372021db94261503a1531c57165fbca
SHA256

bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73
SHA512

ef2e5323ac3d2ebaf82ea3bc4d63cc6888f892f5f3223bd306211026b6cf8b66e07c399abc439a0cdeac64143ecca12e9c4b3c5c7d4dba200e9f060ef71e1873
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/2064-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-62-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe

Executes dropped EXE 3 IoCs

pid	Process
3968	csrsll.exe
4816	csrsll.exe
2064	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-1-5-21-493223053-2004649691-1575712786-1000\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 848 set thread context of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 3968 set thread context of 4816	3968	csrsll.exe	96
PID 3968 set thread context of 2064	3968	csrsll.exe	97

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/848-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/848-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/844-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/844-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/844-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/848-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b84-29.dat	upx
behavioral2/memory/844-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3968-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3968-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2064-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3968-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/844-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4816-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2064-62-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.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	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe
Token: SeDebugPrivilege	4816	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe
844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe
3968	csrsll.exe
4816	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 848 wrote to memory of 844	848	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	84
PID 844 wrote to memory of 4572	844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	85
PID 844 wrote to memory of 4572	844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	85
PID 844 wrote to memory of 4572	844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	85
PID 4572 wrote to memory of 4832	4572	cmd.exe	89
PID 4572 wrote to memory of 4832	4572	cmd.exe	89
PID 4572 wrote to memory of 4832	4572	cmd.exe	89
PID 844 wrote to memory of 3968	844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	90
PID 844 wrote to memory of 3968	844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	90
PID 844 wrote to memory of 3968	844	bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe	90
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 4816	3968	csrsll.exe	96
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97
PID 3968 wrote to memory of 2064	3968	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe
"C:\Users\Admin\AppData\Local\Temp\bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:848
- C:\Users\Admin\AppData\Local\Temp\bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe
  "C:\Users\Admin\AppData\Local\Temp\bcb7aedee14fbd3b301292e2cc7bcdd1604cddb02f3328e50732ba431bf84a73.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IMJJU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4572
  - - 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:4832
- - 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:3968
  - - 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:4816
  - - 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:2064

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\IMJJU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6bb81648f3039471abfc786ea94215c2

SHA1
881e7d3d8415b10bcba91b115a3efecdf039add1

SHA256
996767b1d96b0e5432525280e206f8b9fbe2f48bdc6eaa24d5294f2e0157c14d

SHA512
0c1cd4118a9d09404a4237da8f8843e7ef3710f09b498804172f24284a194b721e1292b619883a614789fa288c9aa6dd19bca177fc038fe9de4786d982a8a22c

Download Submit
memory/844-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/844-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/844-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/844-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/844-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/844-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/848-6-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/848-5-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/848-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/848-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/848-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/848-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/2064-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3968-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3968-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3968-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4816-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads