modiloader | 27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a

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
21-01-2025 13:51

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General

Target

27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
Size

90KB
MD5

aed48a3f8a70c87c57a02a639555144c
SHA1

10f5d32f0424899cf8a0e7acef6f0de84e0bed58
SHA256

27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a
SHA512

850465506b36525d316c33acd510f5a8fc6f70ca9beafe0106ae139e118649c1694c294853d283e5fd56960e28355a8f77f40e053139970b2932efe435f289e5
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD2:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3U

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/1132-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1132-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1132-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1132-63-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe

Executes dropped EXE 3 IoCs

pid	Process
2096	csrsll.exe
1692	csrsll.exe
1132	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-1-5-21-1045960512-3948844814-3059691613-1000\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 3176 set thread context of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 2096 set thread context of 1692	2096	csrsll.exe	104
PID 2096 set thread context of 1132	2096	csrsll.exe	105

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3176-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3176-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2256-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2256-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2256-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3176-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c9a-29.dat	upx
behavioral2/memory/2256-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2096-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1132-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1132-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1132-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2096-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1132-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1132-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2096-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2256-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1692-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1132-63-0x0000000000400000-0x0000000000414000-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	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe
Token: SeDebugPrivilege	1692	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
2096	csrsll.exe
1692	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 3176 wrote to memory of 2256	3176	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	87
PID 2256 wrote to memory of 2488	2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	92
PID 2256 wrote to memory of 2488	2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	92
PID 2256 wrote to memory of 2488	2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	92
PID 2488 wrote to memory of 3976	2488	cmd.exe	96
PID 2488 wrote to memory of 3976	2488	cmd.exe	96
PID 2488 wrote to memory of 3976	2488	cmd.exe	96
PID 2256 wrote to memory of 2096	2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	97
PID 2256 wrote to memory of 2096	2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	97
PID 2256 wrote to memory of 2096	2256	27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe	97
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1692	2096	csrsll.exe	104
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105
PID 2096 wrote to memory of 1132	2096	csrsll.exe	105

C:\Users\Admin\AppData\Local\Temp\27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
"C:\Users\Admin\AppData\Local\Temp\27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Users\Admin\AppData\Local\Temp\27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe
  "C:\Users\Admin\AppData\Local\Temp\27ef3350f50e7d29d6fd36fb26c6b1cca41639e53271aa02716022f21f22e41a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2256
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CQPBJ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2488
  - - 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:3976
- - 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:2096
  - - 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:1692
  - - 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:1132

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\CQPBJ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f1db1412d823ca68fb77fad4d40f371e

SHA1
ac54e2fc989c66e54b9d53dd8af2aca148fc9a52

SHA256
ff8713671e17a5b7805692437e2e12e4cc89691373d9d350eae209d298ffdc35

SHA512
4c18d7c540b488d9a4b1d2242bdc4e9273c84cb8d7bc1aee6dd39d06aa3a402f34374ed4c57f8866c9391157154aab53dba15241d2ebccbb24cb909c4bfbe154

Download Submit
memory/1132-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1132-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1132-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1132-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1132-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1132-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1692-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2096-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2256-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2256-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2256-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3176-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3176-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3176-6-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/3176-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3176-4-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3176-3-0x00000000021A0000-0x00000000021A2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads