44caliber | d4917f32cf3755b07badf1179d6717d4f17618cb68184f0dda48f4a4bbb45376

Resubmissions

26-06-2024 10:20

240626-mc9jdasfmr 10

26-06-2024 10:17

240626-mbemlssepl 10

Analysis

max time kernel
141s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26-06-2024 10:20

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General

Target

Loader.exe
Size

304KB
MD5

f896c2bfec649637e85c463e3a70b2a6
SHA1

04d65945a3b79ee5b48a7e7e22fd24c8198fe332
SHA256

d4917f32cf3755b07badf1179d6717d4f17618cb68184f0dda48f4a4bbb45376
SHA512

0fed9a755f93198e795aac73aff0e17478cd51ffb9c19f80fdfdaf53374b32e2016bf83f0415f253b6f76e736cb36fad5269021d73972749c3d3d84206c6ebe0
SSDEEP

6144:bFcT6MDdbICydeBvtCikGW9mhL8PzeVAOe044E:bFK1CikGemQHOeGE

Score

10^/10

44caliber blackguard persistence spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1255437795820966010/0VVoLF2QZxnBkoGw_P4ovEIbuHZLKgsoVU8zu2nEJgchI5ahmWwv98_frx1Jjvk7GNic

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
BlackGuard
Infostealer first seen in Late 2021.
stealer blackguard
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Loader.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Loader.exe\""	Loader.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.ipify.org
4	freegeoip.app
5	freegeoip.app

Checks processor information in registry 2 TTPs 2 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	Loader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Loader.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4752	Loader.exe
4752	Loader.exe
4752	Loader.exe
4752	Loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4752	Loader.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Adds Run key to start application
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4752

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:2040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
1KB

MD5
e7159eade1b782a240ddb6ecbb442953

SHA1
b5093ece27e586f3cc41ffcdd168a9bd82dd5577

SHA256
a8dd9c4cca14d3c6b5a574efdaa8744d93f8cff4c5d9d7cf740eb563d5b1b3a4

SHA512
4576eeae8a056a97b8bc0b31550dd455a518ac70b5cc255e1c4651b157a355b2271aa2d378a52c61e738898c6972ebf608db7d35450418ab95f71dbde58924b7

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
736B

MD5
cb54bace8a0022920baa81b29cabd60b

SHA1
b6bd354bca6e709223ff5a933d7ab463d317c4c2

SHA256
19ebe737ad8fd5abe998430d26349d3b16c49c39c8c65b94820ffbacfa8dc5fb

SHA512
a294a7369e440c5bb40288d5fd4b2f7ee60563ec1bc4d0f80ee335e9fc582e313c80e57985a80929da5aff11315e0ef0b3d79c7fa8d6615932a9662729c8e3c7

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
1KB

MD5
6feb2a04a06b4af553c6a612669d1133

SHA1
d091faf75dd9f2c53ce2a9af4cd8bd97ae10fb10

SHA256
4f1fbc50fefa00b9e7e2ae233ac25a8274c3257aca1651348450e479c5e27801

SHA512
2b4c9bedff8714ddd53af98833eb06ae814dd72be1ac6b914cf68b811fe7dd1d46cf5b283524e81b46925fd2c4058bcba1bf92874cae171e670565e2a0c85912

Download Submit
memory/4752-0-0x00007FFEAC103000-0x00007FFEAC105000-memory.dmp

Filesize
8KB

Download
memory/4752-1-0x000001E1C5460000-0x000001E1C54B2000-memory.dmp

Filesize
328KB

Download
memory/4752-2-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/4752-121-0x000001E1DF9A0000-0x000001E1DFAA2000-memory.dmp

Filesize
1.0MB

Download
memory/4752-122-0x000001E1DFBF0000-0x000001E1DFD5A000-memory.dmp

Filesize
1.4MB

Download
memory/4752-126-0x000001E1DFBF0000-0x000001E1DFD5A000-memory.dmp

Filesize
1.4MB

Download
memory/4752-125-0x000001E1DF9A0000-0x000001E1DFAA2000-memory.dmp

Filesize
1.0MB

Download
memory/4752-127-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download