modiloader | b27b3a291f9bd366ff0c35bbf6745e40f0a46f84d5f8d749db0bdb2e8da21870

General

Target

f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe
Size

311KB
MD5

f979cefb09626eb8fd92ea9e028c9923
SHA1

ece9815df1b1e449195aa43b19ba2ff702c87459
SHA256

b27b3a291f9bd366ff0c35bbf6745e40f0a46f84d5f8d749db0bdb2e8da21870
SHA512

b6f2c2d6e4b0046e3c8fd0ed5efa32cdcc173f5aeb040fc81de478d4bf473ac357cb455df8ba5580943dab73b2008f570e4a13709eca0ade2da53fa314cbd93d
SSDEEP

6144:0G377xS2Vp2CeiorXhwTBF53EiJpcCJJvHQ/oS:Pr7xS2Vp6FwT7JbJJvH8oS

Score

10^/10

modiloader discovery 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
Modiloader family
modiloader

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

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/2128-0-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/files/0x000400000001db30-6.dat	modiloader_stage2
behavioral2/memory/2128-11-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4448-27-0x0000000000400000-0x000000000044F000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4448	mstwain32.exe

Loads dropped DLL 4 IoCs

pid	Process
4448	mstwain32.exe
4448	mstwain32.exe
4448	mstwain32.exe
4448	mstwain32.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-1-5-21-2045521122-590294423-3465680274-1000\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	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2128-0-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/files/0x000400000001db30-6.dat	upx
behavioral2/memory/2128-11-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4448-27-0x0000000000400000-0x000000000044F000-memory.dmp	upx

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mstwain32.exe	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe
File created	C:\Windows\mstwain32.exe	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe

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 2 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	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstwain32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe
Token: SeBackupPrivilege	3064	vssvc.exe
Token: SeRestorePrivilege	3064	vssvc.exe
Token: SeAuditPrivilege	3064	vssvc.exe
Token: SeDebugPrivilege	4448	mstwain32.exe
Token: SeDebugPrivilege	4448	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4448	mstwain32.exe
4448	mstwain32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 4448	2128	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe	87
PID 2128 wrote to memory of 4448	2128	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe	87
PID 2128 wrote to memory of 4448	2128	f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe	87

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

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f979cefb09626eb8fd92ea9e028c9923_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.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
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:4448

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\cmsetac.dll

Filesize
33KB

MD5
f7158f65293ab0de438ef6aa820b51f0

SHA1
4d4345a57068a398f3e627e41220e52436c3f668

SHA256
b89d893a7c712bfc36a4a3d83124a8184a27ebc581123a4e452ace27fd5d3faf

SHA512
1ef29b275e95a4b43e856b4fe353b05cc1f975026d691b2d2f4c1d220e3435c06d0910b9172172fb43a43d526c2df78759a03d31eb86429b88c8a1857c674d62

Download Submit
C:\Windows\mstwain32.exe

Filesize
311KB

MD5
f979cefb09626eb8fd92ea9e028c9923

SHA1
ece9815df1b1e449195aa43b19ba2ff702c87459

SHA256
b27b3a291f9bd366ff0c35bbf6745e40f0a46f84d5f8d749db0bdb2e8da21870

SHA512
b6f2c2d6e4b0046e3c8fd0ed5efa32cdcc173f5aeb040fc81de478d4bf473ac357cb455df8ba5580943dab73b2008f570e4a13709eca0ade2da53fa314cbd93d

Download Submit
C:\Windows\ntdtcstp.dll

Filesize
7KB

MD5
67587e25a971a141628d7f07bd40ffa0

SHA1
76fcd014539a3bb247cc0b761225f68bd6055f6b

SHA256
e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

SHA512
6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

Download Submit
memory/2128-0-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2128-1-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/2128-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4448-19-0x00000000020D0000-0x00000000020D1000-memory.dmp

Filesize
4KB

Download
memory/4448-23-0x00000000030E0000-0x00000000030EE000-memory.dmp

Filesize
56KB

Download
memory/4448-26-0x0000000002F90000-0x0000000002F91000-memory.dmp

Filesize
4KB

Download
memory/4448-27-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4448-28-0x0000000002120000-0x0000000002128000-memory.dmp

Filesize
32KB

Download
memory/4448-29-0x00000000030E0000-0x00000000030EE000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads