modiloader | 8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05

Analysis

max time kernel
118s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 05:17

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General

Target

8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
Size

90KB
MD5

c9f389f6b4495d86d33ddfe85de5c430
SHA1

5ddee557e515de0170204532554eec4067f47201
SHA256

8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05
SHA512

00a699a0217f5ebf420e5ac3e15642b9db98e066b15bde20619964a68fb69c492cd62e93dfddc6a7ebbd283a2fb887863028107381362d90015821358f7eacac
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDe: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/2092-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2092-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2092-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2092-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe

Executes dropped EXE 3 IoCs

pid	Process
3916	csrsll.exe
4600	csrsll.exe
2092	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-1-5-21-2437139445-1151884604-3026847218-1000\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 4816 set thread context of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 3916 set thread context of 4600	3916	csrsll.exe	100
PID 3916 set thread context of 2092	3916	csrsll.exe	101

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4816-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4816-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2832-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2832-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2832-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4816-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b8d-29.dat	upx
behavioral2/memory/2832-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3916-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3916-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2092-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2092-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2092-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2092-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3916-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2092-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2832-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4600-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2092-61-0x0000000000400000-0x0000000000414000-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	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	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe
Token: SeDebugPrivilege	4600	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
3916	csrsll.exe
4600	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 4816 wrote to memory of 2832	4816	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	83
PID 2832 wrote to memory of 4004	2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	86
PID 2832 wrote to memory of 4004	2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	86
PID 2832 wrote to memory of 4004	2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	86
PID 4004 wrote to memory of 4516	4004	cmd.exe	90
PID 4004 wrote to memory of 4516	4004	cmd.exe	90
PID 4004 wrote to memory of 4516	4004	cmd.exe	90
PID 2832 wrote to memory of 3916	2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	91
PID 2832 wrote to memory of 3916	2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	91
PID 2832 wrote to memory of 3916	2832	8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe	91
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 4600	3916	csrsll.exe	100
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101
PID 3916 wrote to memory of 2092	3916	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
"C:\Users\Admin\AppData\Local\Temp\8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Local\Temp\8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe
  "C:\Users\Admin\AppData\Local\Temp\8e27ad053bb0e09e2652fd8107b94bdc9384dca17689ffd377fa308969730c05N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2832
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BCFRS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4004
  - - 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:4516
- - 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:3916
  - - 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:4600
  - - 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:2092

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\BCFRS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
d2b419f1ffc9aa01798605bc5542e591

SHA1
03527170a9c5d9d18b0d9a4b41f5dedbf1b4c5b3

SHA256
07d3288a5c86782c291dc024a80cc67d94f69013f033d4f4d93a592cf70507a1

SHA512
484f2fcabed73e5dd60ca5ceab4f829833fefadac255c14f19409964bba8a0854f93f0fbdc41d370d41db9089928db52bc9f99aae9590bbb12350c1c937b292e

Download Submit
memory/2092-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2092-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2092-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2092-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2092-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2092-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2832-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2832-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2832-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2832-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2832-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2832-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3916-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3916-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3916-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4600-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4816-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4816-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4816-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/4816-6-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/4816-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4816-3-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads