modiloader | 435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38

General

Target

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
Size

270KB
MD5

456777f9842bbf7349c8a8a8c3cf3ef3
SHA1

4b3167b0d94ca6a06491b415ced1de0d003afe1d
SHA256

435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38
SHA512

1011ca3db226ee755d0b10c8116bc4de0fd1b37a55864b177b774b9948a3ea2a6fa553aad41b10742c3b8bb307becad3fb78cb7dc64f6efb81bf4f9cd6e0e557
SSDEEP

6144:hG377xS2Vp2CeiorXdwTBgWx4v53RpcCJJvH9:0r7xS2Vp6RwTyCgbJJvH9

Score

10^/10

modiloader evasion persistence trojan

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

ModiLoader Second Stage 2 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023165-133.dat	modiloader_stage2
behavioral2/files/0x0006000000023165-134.dat	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
4160	mstwain32.exe

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe

Loads dropped DLL 4 IoCs

pid	Process
4160	mstwain32.exe
4160	mstwain32.exe
4160	mstwain32.exe
4160	mstwain32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\mstwain32.exe	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
File opened for modification	C:\Windows\mstwain32.exe	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1556	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
Token: SeBackupPrivilege	4404	vssvc.exe
Token: SeRestorePrivilege	4404	vssvc.exe
Token: SeAuditPrivilege	4404	vssvc.exe
Token: SeDebugPrivilege	4160	mstwain32.exe
Token: SeDebugPrivilege	4160	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4160	mstwain32.exe
4160	mstwain32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 4160	1556	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe	90
PID 1556 wrote to memory of 4160	1556	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe	90
PID 1556 wrote to memory of 4160	1556	435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe	90

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

C:\Users\Admin\AppData\Local\Temp\435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe
"C:\Users\Admin\AppData\Local\Temp\435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe"
1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:4160

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4404

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\cmsetac.dll

Filesize
33KB

MD5
23ed9388be8565ccd0373662e401bdec

SHA1
c210fbd92684d06c0efec28db4264d7aa70e0a58

SHA256
3c905cc04fa51739f7eeb75447bfea0c35caf93bf028adfe4c619da34684594a

SHA512
384196f2fe85178439c18d5531b2574140e78c4606921b1ad42cede6817e71c585cb4193eb21e26361320db39a5a11adde38b7ca26e9b0cd662def784209ac08

Download Submit
C:\Windows\cmsetac.dll

Filesize
33KB

MD5
23ed9388be8565ccd0373662e401bdec

SHA1
c210fbd92684d06c0efec28db4264d7aa70e0a58

SHA256
3c905cc04fa51739f7eeb75447bfea0c35caf93bf028adfe4c619da34684594a

SHA512
384196f2fe85178439c18d5531b2574140e78c4606921b1ad42cede6817e71c585cb4193eb21e26361320db39a5a11adde38b7ca26e9b0cd662def784209ac08

Download Submit
C:\Windows\mstwain32.exe

Filesize
270KB

MD5
456777f9842bbf7349c8a8a8c3cf3ef3

SHA1
4b3167b0d94ca6a06491b415ced1de0d003afe1d

SHA256
435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38

SHA512
1011ca3db226ee755d0b10c8116bc4de0fd1b37a55864b177b774b9948a3ea2a6fa553aad41b10742c3b8bb307becad3fb78cb7dc64f6efb81bf4f9cd6e0e557

Download Submit
C:\Windows\mstwain32.exe

Filesize
270KB

MD5
456777f9842bbf7349c8a8a8c3cf3ef3

SHA1
4b3167b0d94ca6a06491b415ced1de0d003afe1d

SHA256
435a6c677587ef5a14dd2791f4fad36b8ea6a45fe63c3be15ea4d001fa67fa38

SHA512
1011ca3db226ee755d0b10c8116bc4de0fd1b37a55864b177b774b9948a3ea2a6fa553aad41b10742c3b8bb307becad3fb78cb7dc64f6efb81bf4f9cd6e0e557

Download Submit
C:\Windows\ntdtcstp.dll

Filesize
7KB

MD5
67587e25a971a141628d7f07bd40ffa0

SHA1
76fcd014539a3bb247cc0b761225f68bd6055f6b

SHA256
e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

SHA512
6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

Download Submit
C:\Windows\ntdtcstp.dll

Filesize
7KB

MD5
67587e25a971a141628d7f07bd40ffa0

SHA1
76fcd014539a3bb247cc0b761225f68bd6055f6b

SHA256
e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

SHA512
6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

Download Submit
memory/4160-139-0x0000000003080000-0x000000000308E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads