dridex | 27560c14d4e14a32b62e063af836be3308bf923eac063be28d49b04c6e279bde

Analysis

max time kernel
19s
max time network
112s
platform
windows10_x64
resource
win10v200722
submitted
08/09/2020, 13:49

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General

Target
edrfgergzip.dll
Size 324KB
Sample200908-txvxzppvda
SHA256 27560c14d4e14a32b62e063af836be3308bf923eac063be28d49b04c6e279bde
MD5 ff525b560610f8a1727041d92941b9fa
SHA1 545c9019b221759465c38bd6c1239cb399552562
SHA512 5252601f1268ed0097e87c4bf70eb31bbbec12358aedace546fb86a6b7bda7ce8fbe379d23ae43ddc2cde6da4bbd01d1e61a7e789e241543ac56516834723cd8
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

10444

67.213.75.205:443
217.160.78.166:4664
185.201.9.197:9443
108.175.9.22:33443

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

resource	yara_rule
behavioral2/memory/632-1-0x0000000073CE0000-0x0000000073D0C000-memory.dmp	dridex_ldr

Dridex Loader 'dmod' strings 1 IoCs

Detects 'dmod' strings in Dridex loader.

botnet loader

resource	yara_rule
behavioral2/memory/632-1-0x0000000073CE0000-0x0000000073D0C000-memory.dmp	dridex_ldr_dmod

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 11ae5617f785d601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2380	svchost.exe
Token: SeCreatePagefilePrivilege	2380	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3488 wrote to memory of 632	3488	rundll32.exe	68
PID 3488 wrote to memory of 632	3488	rundll32.exe	68
PID 3488 wrote to memory of 632	3488	rundll32.exe	68

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\edrfgergzip.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\edrfgergzip.dll,#1
  2⤵
  PID:632

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2380

Network

MITRE ATT&CK Matrix

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Downloads

memory/632-1-0x0000000073CE0000-0x0000000073D0C000-memory.dmp

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