modiloader | 4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b

General

Target

4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe
Size

108KB
MD5

0d5c6df2225cfa323d5210c4dbea781c
SHA1

961b0dd2efb0bf5ed632a86c3e10b879b56e8598
SHA256

4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b
SHA512

a667ba63fa18c52b2cbbc658117e7ba00725ffef0b80c3f0b5e7d9ed373bf4e75c93fda05a720381c122518c642e88ed353cf4ef9bfccf516c0977055949e6ca
SSDEEP

1536:W1+JcUMJKrUnVKjWYYKhyP7VVDVbsuUzX0Htmwg3De5pts8V2tSKbEBNaXFwTOJX:W1+MJKrUnFYY5z1i0Nmbi5fJBN9Qout

Score

10^/10

modiloader evasion persistence trojan upx

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 4 IoCs

resource	yara_rule
behavioral2/memory/4800-133-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral2/memory/4756-137-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral2/memory/4800-138-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2
behavioral2/memory/4756-144-0x0000000000400000-0x0000000000450000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
4756	mstwain32.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4800-132-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/memory/4800-133-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/files/0x0007000000022f56-135.dat	upx
behavioral2/files/0x0007000000022f56-136.dat	upx
behavioral2/memory/4756-137-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/memory/4800-138-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/memory/4756-144-0x0000000000400000-0x0000000000450000-memory.dmp	upx

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe

Loads dropped DLL 4 IoCs

pid	Process
4756	mstwain32.exe
4756	mstwain32.exe
4756	mstwain32.exe
4756	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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mstwain32.exe	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe
File created	C:\Windows\mstwain32.exe	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.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	4800	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe
Token: SeBackupPrivilege	3068	vssvc.exe
Token: SeRestorePrivilege	3068	vssvc.exe
Token: SeAuditPrivilege	3068	vssvc.exe
Token: SeDebugPrivilege	4756	mstwain32.exe
Token: SeDebugPrivilege	4756	mstwain32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4800	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4756	mstwain32.exe
4756	mstwain32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 4756	4800	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe	85
PID 4800 wrote to memory of 4756	4800	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe	85
PID 4800 wrote to memory of 4756	4800	4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe	85

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\4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe
"C:\Users\Admin\AppData\Local\Temp\4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.exe"
1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b.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:4756

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3068

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

Replay Monitor

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Downloads

C:\Windows\cmsetac.dll

Filesize
32KB

MD5
0b1e3b88641a8a9ecdd6a0f270ce42d4

SHA1
d3677078105f95e20810208e05cc5fff7bfb9115

SHA256
313a977faac7e1208c5367cf83444b56c623c1c235866d8a71eadeca49de8bff

SHA512
40ca7f64e42c291760dc418b0e27f677333aa4f407abbd11db1b3dbe9aa11f9d893d069d201c2cf7d220d9e317315b79d0a3621c68e1f5343b6bfb1e5385d21e

Download Submit
C:\Windows\cmsetac.dll

Filesize
32KB

MD5
0b1e3b88641a8a9ecdd6a0f270ce42d4

SHA1
d3677078105f95e20810208e05cc5fff7bfb9115

SHA256
313a977faac7e1208c5367cf83444b56c623c1c235866d8a71eadeca49de8bff

SHA512
40ca7f64e42c291760dc418b0e27f677333aa4f407abbd11db1b3dbe9aa11f9d893d069d201c2cf7d220d9e317315b79d0a3621c68e1f5343b6bfb1e5385d21e

Download Submit
C:\Windows\mstwain32.exe

Filesize
108KB

MD5
0d5c6df2225cfa323d5210c4dbea781c

SHA1
961b0dd2efb0bf5ed632a86c3e10b879b56e8598

SHA256
4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b

SHA512
a667ba63fa18c52b2cbbc658117e7ba00725ffef0b80c3f0b5e7d9ed373bf4e75c93fda05a720381c122518c642e88ed353cf4ef9bfccf516c0977055949e6ca

Download Submit
C:\Windows\mstwain32.exe

Filesize
108KB

MD5
0d5c6df2225cfa323d5210c4dbea781c

SHA1
961b0dd2efb0bf5ed632a86c3e10b879b56e8598

SHA256
4cafbdc8833169b441cb90523b25721037adfcd46d691eecbb2043f1bd5a7f5b

SHA512
a667ba63fa18c52b2cbbc658117e7ba00725ffef0b80c3f0b5e7d9ed373bf4e75c93fda05a720381c122518c642e88ed353cf4ef9bfccf516c0977055949e6ca

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/4756-137-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4756-143-0x0000000003080000-0x000000000308E000-memory.dmp

Filesize
56KB

Download
memory/4756-144-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4800-138-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4800-132-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4800-133-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads