modiloader | 0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02/07/2024, 18:31

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General

Target
0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe
Size 90KB
Sample240702-w53e7syflp
SHA256 0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28
MD5 e9241318cc1e2face5e70cc528388409
SHA1 06046c2e66b3ea2f20e184b49637c7dc9ad792a3
SHA512 14ea14903bca5322b8aef95f4ef805b1ebd2dcb696e7d30106f0c281214489fea0affcc2e44c58ec100be310a5198c8adca94f98f7aae04dd5bda75c6c2b6dee
SSDEEP 1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader 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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/816-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/816-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/816-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/816-62-0x0000000000400000-0x0000000000414000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe

Executes dropped EXE 3 IoCs

pid	Process
1852	csrsll.exe
4776	csrsll.exe
816	csrsll.exe

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4844-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2984-4-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2984-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2984-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2984-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2984-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4844-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x00080000000235c2-30.dat	upx
behavioral2/memory/1852-38-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/816-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2984-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/816-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/816-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/816-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1852-49-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/816-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4776-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/816-62-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-1181767204-2009306918-3718769404-1000\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 4844 set thread context of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 1852 set thread context of 4776	1852	csrsll.exe	102
PID 1852 set thread context of 816	1852	csrsll.exe	103

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe
Token: SeDebugPrivilege	4776	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe
2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe
1852	csrsll.exe
4776	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 4844 wrote to memory of 2984	4844	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	92
PID 2984 wrote to memory of 4288	2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	94
PID 2984 wrote to memory of 4288	2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	94
PID 2984 wrote to memory of 4288	2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	94
PID 4288 wrote to memory of 1704	4288	cmd.exe	97
PID 4288 wrote to memory of 1704	4288	cmd.exe	97
PID 4288 wrote to memory of 1704	4288	cmd.exe	97
PID 2984 wrote to memory of 1852	2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	98
PID 2984 wrote to memory of 1852	2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	98
PID 2984 wrote to memory of 1852	2984	0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe	98
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 4776	1852	csrsll.exe	102
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103
PID 1852 wrote to memory of 816	1852	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe
"C:\Users\Admin\AppData\Local\Temp\0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe
  "C:\Users\Admin\AppData\Local\Temp\0ac0dc600dcae731071c8ac33203f8006b4a26980357923dce9d99f2c99f8b28.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MNKSE.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4288
  - - 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
      PID:1704
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1852
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4776
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      PID:816

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4408,i,3724086843943218842,1026644135694712596,262144 --variations-seed-version --mojo-platform-channel-handle=3740 /prefetch:8
1⤵
PID:2768

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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MNKSE.txt

Path C:\Users\Admin\AppData\Local\Temp\MNKSE.txt
Size 145B
SHA256 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff
MD5 4eb61ec7816c34ec8c125acadc57ec1b
SHA1 b0015cc865c0bb1a027be663027d3829401a31cc
SHA512 f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1
MD5 SHA1 SHA512

Submit Download

csrsll.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Size 90KB
SHA256 fbc16581e13f13821f6365dd37a51b8ecedf6c8aa455ee26868ad226bb8ae3e3
MD5 68895498b0ace646e5789163dc4a5465
SHA1 41f6203285f9e949d9411918782b538bcc484307
SHA512 4fb7ea9618a5dfd56007a9de65aaf3ff2d59bce2d21b617a84b2ecd6c29f47df5a14e7d75fcb15fe113fa6d038c87717f1a3a45e19a593be78fcb936c70507df
SSDEEP 1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/816-55-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/816-52-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/816-62-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/816-43-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/816-51-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/816-57-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1852-49-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/1852-38-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/2984-12-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/2984-6-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/2984-11-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2984-4-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2984-58-0x0000000000410000-0x00000000004D9000-memory.dmp

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memory/2984-60-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2984-10-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/4776-61-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/4844-3-0x00000000021D0000-0x00000000021D2000-memory.dmp

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memory/4844-7-0x00000000021E0000-0x00000000021E2000-memory.dmp

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memory/4844-8-0x00000000021F0000-0x00000000021F2000-memory.dmp

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memory/4844-9-0x0000000002200000-0x0000000002202000-memory.dmp

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memory/4844-0-0x0000000000400000-0x0000000000453000-memory.dmp

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memory/4844-14-0x0000000000400000-0x0000000000453000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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