dridex | e9e0a2d27876dc9e0fb5e4a9675a23be3f1a8651f72d5774db0e34c0418fcbf8

General

Target

Documentation 644.xls
Size

778KB
MD5

955ddd57164c95530bbff3d5481c0cde
SHA1

38449ef5a84f657d39228df55586fa13cab8d9f1
SHA256

e9e0a2d27876dc9e0fb5e4a9675a23be3f1a8651f72d5774db0e34c0418fcbf8
SHA512

3f502ef2bf16519e0992129a0070efcee4905d88f60b75f1389e39e9549192631ed796f27918b797b0de917e46f3d8c7690201ad0df049e24251844dd0007e38

Score

10^/10

dridex 111 botnet loader ransomware

Malware Config

Extracted

Family

dridex

Botnet

111

C2

52.73.70.149:443

8.4.9.152:3786

185.246.87.202:3098

50.116.111.64:5353

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.

Processes:

wMIc.exe

description pid pid_target process target process

Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1940 3364 wMIc.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	3364	wMIc.exe

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/3104-8-0x0000000073E00000-0x0000000073E1F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

wMIc.exe

flow pid process

25 1940 wMIc.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3104 rundll32.exe

flow	pid	process
25	1940	wMIc.exe

pid	process
3104	rundll32.exe

JavaScript code in executable 2 IoCs

Processes:

resource	yara_rule
C:\Windows\Temp\4j22g.dll	js
\Windows\Temp\4j22g.dll	js

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

756 EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 42 IoCs

Processes:

wMIc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1940	wMIc.exe
Token: SeSecurityPrivilege	1940	wMIc.exe
Token: SeTakeOwnershipPrivilege	1940	wMIc.exe
Token: SeLoadDriverPrivilege	1940	wMIc.exe
Token: SeSystemProfilePrivilege	1940	wMIc.exe
Token: SeSystemtimePrivilege	1940	wMIc.exe
Token: SeProfSingleProcessPrivilege	1940	wMIc.exe
Token: SeIncBasePriorityPrivilege	1940	wMIc.exe
Token: SeCreatePagefilePrivilege	1940	wMIc.exe
Token: SeBackupPrivilege	1940	wMIc.exe
Token: SeRestorePrivilege	1940	wMIc.exe
Token: SeShutdownPrivilege	1940	wMIc.exe
Token: SeDebugPrivilege	1940	wMIc.exe
Token: SeSystemEnvironmentPrivilege	1940	wMIc.exe
Token: SeRemoteShutdownPrivilege	1940	wMIc.exe
Token: SeUndockPrivilege	1940	wMIc.exe
Token: SeManageVolumePrivilege	1940	wMIc.exe
Token: 33	1940	wMIc.exe
Token: 34	1940	wMIc.exe
Token: 35	1940	wMIc.exe
Token: 36	1940	wMIc.exe
Token: SeIncreaseQuotaPrivilege	1940	wMIc.exe
Token: SeSecurityPrivilege	1940	wMIc.exe
Token: SeTakeOwnershipPrivilege	1940	wMIc.exe
Token: SeLoadDriverPrivilege	1940	wMIc.exe
Token: SeSystemProfilePrivilege	1940	wMIc.exe
Token: SeSystemtimePrivilege	1940	wMIc.exe
Token: SeProfSingleProcessPrivilege	1940	wMIc.exe
Token: SeIncBasePriorityPrivilege	1940	wMIc.exe
Token: SeCreatePagefilePrivilege	1940	wMIc.exe
Token: SeBackupPrivilege	1940	wMIc.exe
Token: SeRestorePrivilege	1940	wMIc.exe
Token: SeShutdownPrivilege	1940	wMIc.exe
Token: SeDebugPrivilege	1940	wMIc.exe
Token: SeSystemEnvironmentPrivilege	1940	wMIc.exe
Token: SeRemoteShutdownPrivilege	1940	wMIc.exe
Token: SeUndockPrivilege	1940	wMIc.exe
Token: SeManageVolumePrivilege	1940	wMIc.exe
Token: 33	1940	wMIc.exe
Token: 34	1940	wMIc.exe
Token: 35	1940	wMIc.exe
Token: 36	1940	wMIc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

756 EXCEL.EXE
756 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE
756	EXCEL.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

wMIc.exerundll32.exe

description	pid	process	target process
PID 1940 wrote to memory of 2576	1940	wMIc.exe	rundll32.exe
PID 1940 wrote to memory of 2576	1940	wMIc.exe	rundll32.exe
PID 2576 wrote to memory of 3104	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 3104	2576	rundll32.exe	rundll32.exe
PID 2576 wrote to memory of 3104	2576	rundll32.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Documentation 644.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:756

C:\Windows\system32\wbem\wMIc.exe
wMIc
1⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:/Windows/Temp//4j22g.dll InitHelperDll
2⤵
- Suspicious use of WriteProcessMemory
PID:2576

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:/Windows/Temp//4j22g.dll InitHelperDll
3⤵
- Loads dropped DLL
PID:3104

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\2E7EF.xsl
MD5
bf8eb8c05f7fef58d868e7b066936a12

SHA1
ed97a033371ea71e271506ea015316efa652c6d9

SHA256
2219065f014fa13dfc5681b5f675ccd3abef2f515a5abb2d0217d2e8c766270a

SHA512
b76d583cfe8718f8933b845fe44521a06e36d63a26094b0f6dc3b42221505f21411682360ce20113bf0904f463eef82424e0913e5930c703069c45a62dd02fb3

Download Submit
C:\Windows\Temp\4j22g.dll
MD5
d47ab880746796f31f9130b551ba5f63

SHA1
7b792f55a895ebe6c67917780f2a50df55ba1e82

SHA256
dd8dbc7a333d89c7c6e24affa9c1d356a47d57f3711a43cc2d87fd6a728f429f

SHA512
581cf0b80de0ac276821540b2126d33ee871946f9057ee3bd1b9172e97227b090b2f01ffd4551407d388225712fd63526df5af5d290bf71213963c15804191f7

Download Submit
\Windows\Temp\4j22g.dll
MD5
d47ab880746796f31f9130b551ba5f63

SHA1
7b792f55a895ebe6c67917780f2a50df55ba1e82

SHA256
dd8dbc7a333d89c7c6e24affa9c1d356a47d57f3711a43cc2d87fd6a728f429f

SHA512
581cf0b80de0ac276821540b2126d33ee871946f9057ee3bd1b9172e97227b090b2f01ffd4551407d388225712fd63526df5af5d290bf71213963c15804191f7

Download Submit
memory/756-2-0x00007FFFCF370000-0x00007FFFCF9A7000-memory.dmp

Filesize
6.2MB

Download
memory/2576-4-0x0000000000000000-mapping.dmp

Download
memory/3104-6-0x0000000000000000-mapping.dmp

Download
memory/3104-8-0x0000000073E00000-0x0000000073E1F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads