warmcookie | f47144c7159be31d8116fdc36b66cb72c917cd91a4bbe9eaa55dec929c1cffdd

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
submitted
30/11/2024, 12:26

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General

Target

f47144c7159be31d8116fdc36b66cb72c917cd91a4bbe9eaa55dec929c1cffdd.dll
Size

129KB
MD5

80cd37d9eb33507bf054f32ce2380b09
SHA1

6e8d57dde537ace0639931569ae2b04b9cb99a26
SHA256

f47144c7159be31d8116fdc36b66cb72c917cd91a4bbe9eaa55dec929c1cffdd
SHA512

18f42496c4a66f11aa834e1db7f727ea7041882408a83be00f5ddacfbca439debe611f24eadd19e9453bc774d91d33d98ac25290791d501af2e706dc9ef89bde
SSDEEP

3072:Jhw2Pja55J8hTGMjctYnc/F5ipfVMFY1lz:Jhwv55WT7ctiiF5cv

Score

10^/10

warmcookie backdoor

Malware Config

Extracted

Family

warmcookie

185.161.251.26

Attributes

mutex
5bba9e40-0e32-4b7f-b39a-667bbc0c2293
user_agent
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Signatures

Warmcookie family
warmcookie
Warmcookie, Badspace
Warmcookie aka Badspace is a backdoor written in C++.
backdoor warmcookie

Blocklisted process makes network request 10 IoCs

flow	pid	Process
31	4488	rundll32.exe
35	4488	rundll32.exe
39	4488	rundll32.exe
40	4488	rundll32.exe
47	4488	rundll32.exe
48	4488	rundll32.exe
49	4488	rundll32.exe
50	4488	rundll32.exe
51	4488	rundll32.exe
55	4488	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4488	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Tandem.job	regsvr32.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	rundll32.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f47144c7159be31d8116fdc36b66cb72c917cd91a4bbe9eaa55dec929c1cffdd.dll
1⤵
- Drops file in Windows directory
PID:2844

C:\Windows\system32\rundll32.exe
C:\Windows\system32\rundll32.exe "C:\ProgramData\Tandem\Updater.dll",Start /u
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Modifies data under HKEY_USERS
PID:4488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Tandem\Updater.dll

Filesize
129KB

MD5
80cd37d9eb33507bf054f32ce2380b09

SHA1
6e8d57dde537ace0639931569ae2b04b9cb99a26

SHA256
f47144c7159be31d8116fdc36b66cb72c917cd91a4bbe9eaa55dec929c1cffdd

SHA512
18f42496c4a66f11aa834e1db7f727ea7041882408a83be00f5ddacfbca439debe611f24eadd19e9453bc774d91d33d98ac25290791d501af2e706dc9ef89bde

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