dridex | 7a6e7bd25e49ab0c5fdeae608fc79ae61a24f9d6048a8dc2e4cc48cf212acdf8

Analysis

max time kernel
151s
max time network
151s
platform
windows10_x64
resource
win10v20210410
submitted
16/08/2021, 22:00

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General

Target
Simplydisk_TPEB_Tariff_CtoC_16082021_Rev_2_74317.xlsm
Size 258KB
Sample210816-c2fqt9lean
SHA256 7a6e7bd25e49ab0c5fdeae608fc79ae61a24f9d6048a8dc2e4cc48cf212acdf8
MD5 576fac94cc5f39cebf281fb795c928a5
SHA1 0dca05a624d075f64efe79578a63040492815e97
SHA512 d7cab1ef40051f45c30b09c56c137ee0503f5d6c73106243bdcfde7bf6176d8b8ef04058c52490876127c235ffcd0f16959bb1767651641431f4d699899354bd
MD5 SHA1 SHA512

Score

10^/10

dridex 22202 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

22202

134.209.182.12:443
188.40.100.254:4664
103.109.247.9:10443

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 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1784	3968	MSHTA.exe	68
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3672	3884	rundll32.exe	76

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

resource	yara_rule
behavioral2/memory/1364-293-0x00000000735E0000-0x0000000073610000-memory.dmp	dridex_ldr

Blocklisted process makes network request 3 IoCs

flow	pid	Process
30	1784	MSHTA.exe
31	1784	MSHTA.exe
33	1784	MSHTA.exe

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
1364	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

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

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

pid	Process
3968	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 42 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2100	wmic.exe
Token: SeSecurityPrivilege	2100	wmic.exe
Token: SeTakeOwnershipPrivilege	2100	wmic.exe
Token: SeLoadDriverPrivilege	2100	wmic.exe
Token: SeSystemProfilePrivilege	2100	wmic.exe
Token: SeSystemtimePrivilege	2100	wmic.exe
Token: SeProfSingleProcessPrivilege	2100	wmic.exe
Token: SeIncBasePriorityPrivilege	2100	wmic.exe
Token: SeCreatePagefilePrivilege	2100	wmic.exe
Token: SeBackupPrivilege	2100	wmic.exe
Token: SeRestorePrivilege	2100	wmic.exe
Token: SeShutdownPrivilege	2100	wmic.exe
Token: SeDebugPrivilege	2100	wmic.exe
Token: SeSystemEnvironmentPrivilege	2100	wmic.exe
Token: SeRemoteShutdownPrivilege	2100	wmic.exe
Token: SeUndockPrivilege	2100	wmic.exe
Token: SeManageVolumePrivilege	2100	wmic.exe
Token: 33	2100	wmic.exe
Token: 34	2100	wmic.exe
Token: 35	2100	wmic.exe
Token: 36	2100	wmic.exe
Token: SeIncreaseQuotaPrivilege	2100	wmic.exe
Token: SeSecurityPrivilege	2100	wmic.exe
Token: SeTakeOwnershipPrivilege	2100	wmic.exe
Token: SeLoadDriverPrivilege	2100	wmic.exe
Token: SeSystemProfilePrivilege	2100	wmic.exe
Token: SeSystemtimePrivilege	2100	wmic.exe
Token: SeProfSingleProcessPrivilege	2100	wmic.exe
Token: SeIncBasePriorityPrivilege	2100	wmic.exe
Token: SeCreatePagefilePrivilege	2100	wmic.exe
Token: SeBackupPrivilege	2100	wmic.exe
Token: SeRestorePrivilege	2100	wmic.exe
Token: SeShutdownPrivilege	2100	wmic.exe
Token: SeDebugPrivilege	2100	wmic.exe
Token: SeSystemEnvironmentPrivilege	2100	wmic.exe
Token: SeRemoteShutdownPrivilege	2100	wmic.exe
Token: SeUndockPrivilege	2100	wmic.exe
Token: SeManageVolumePrivilege	2100	wmic.exe
Token: 33	2100	wmic.exe
Token: 34	2100	wmic.exe
Token: 35	2100	wmic.exe
Token: 36	2100	wmic.exe

Suspicious use of SetWindowsHookEx 18 IoCs

pid	Process
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE
3968	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 1784	3968	EXCEL.EXE	82
PID 3968 wrote to memory of 1784	3968	EXCEL.EXE	82
PID 1784 wrote to memory of 2100	1784	MSHTA.exe	83
PID 1784 wrote to memory of 2100	1784	MSHTA.exe	83
PID 3672 wrote to memory of 1364	3672	rundll32.exe	86
PID 3672 wrote to memory of 1364	3672	rundll32.exe	86
PID 3672 wrote to memory of 1364	3672	rundll32.exe	86

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Simplydisk_TPEB_Tariff_CtoC_16082021_Rev_2_74317.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Windows\SYSTEM32\MSHTA.exe
  MSHTA C:\ProgramData\RBoUIwECkRqh.sct
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Windows\System32\Wbem\wmic.exe
    wmic process call create "rundll32.exe C:\ProgramData\OInHqqJQXuiTVZxncpUb.dll FindSheet"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2100

C:\Windows\system32\rundll32.exe
rundll32.exe C:\ProgramData\OInHqqJQXuiTVZxncpUb.dll FindSheet
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\ProgramData\OInHqqJQXuiTVZxncpUb.dll FindSheet
  2⤵
  - Loads dropped DLL
  - Checks whether UAC is enabled
  PID:1364

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1364-293-0x00000000735E0000-0x0000000073610000-memory.dmp

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memory/1364-292-0x0000000000E70000-0x0000000000E76000-memory.dmp

Download

memory/3968-123-0x000001D2BE7C0000-0x000001D2C06B5000-memory.dmp

Download

memory/3968-121-0x00007FFF2E180000-0x00007FFF2F26E000-memory.dmp

Download

memory/3968-114-0x00007FF7CC770000-0x00007FF7CFD26000-memory.dmp

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memory/3968-122-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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memory/3968-118-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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memory/3968-117-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Download

memory/3968-116-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Download

memory/3968-115-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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memory/3968-36783-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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memory/3968-36781-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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memory/3968-36786-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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memory/3968-36784-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads