44caliber | cd8e9641046306857f3a12009ddf442922e32484696b475175c867e8ff580f3e

Analysis

max time kernel
143s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
12-07-2023 18:25

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General

Target

1c135a7b80703354a6d8bac14381447d.exe
Size

274KB
MD5

1c135a7b80703354a6d8bac14381447d
SHA1

7562f7ba852f7ff91b6ef10647417bd54ff55c6c
SHA256

cd8e9641046306857f3a12009ddf442922e32484696b475175c867e8ff580f3e
SHA512

b9cad0723b37ee5612e64873ebddf428b4ace6396a2b301d8a19bc8c49c9084021f8c14da37298e262888ad62f6bbf78866bef152bb30fa8df39e60348396864
SSDEEP

6144:hf+BLtABPDOpJTNN6eTSUdZ/pOlYeJqlA1D0Mk+:4pYSSUdZ/olYet1DY+

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/956477791124205569/zhz-iUwTtwf3ND8UdSeoNmdX8X4ElZBSxqhFrwstZ6oV5o-CWZxANYz737UasCARyImg

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 freegeoip.app
6 freegeoip.app

flow	ioc
4	freegeoip.app
6	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

Processes:

1c135a7b80703354a6d8bac14381447d.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	1c135a7b80703354a6d8bac14381447d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	1c135a7b80703354a6d8bac14381447d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

1c135a7b80703354a6d8bac14381447d.exe

pid	process
2984	1c135a7b80703354a6d8bac14381447d.exe
2984	1c135a7b80703354a6d8bac14381447d.exe
2984	1c135a7b80703354a6d8bac14381447d.exe
2984	1c135a7b80703354a6d8bac14381447d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

1c135a7b80703354a6d8bac14381447d.exe

description pid process

Token: SeDebugPrivilege 2984 1c135a7b80703354a6d8bac14381447d.exe

description	pid	process
Token: SeDebugPrivilege	2984	1c135a7b80703354a6d8bac14381447d.exe

C:\Users\Admin\AppData\Local\Temp\1c135a7b80703354a6d8bac14381447d.exe
"C:\Users\Admin\AppData\Local\Temp\1c135a7b80703354a6d8bac14381447d.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
739B

MD5
f15ed0d65baadb51f6b722c9e7669506

SHA1
6710cbfb1339f6fff08d754f933a50576bc6893f

SHA256
e4f7cb93b308dcf7c60209f1624c1424ff87eda6d4b9881707353f8eb00da4ff

SHA512
8777b44348e086172e58c2cdac41d4a6cd41ea803cf9b0b8d9263adf5a3614d186d9d08f4c1eed2a13496bfa57abec4a43491dbcf6f46485574b70f8ff9a868d

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

Filesize
1KB

MD5
17bd2bc5caba4a6f677c6a350d7cf031

SHA1
bf55ec5261d385d212225620f219adca79452938

SHA256
8149efb62e8492f0d2190ec6aa97b703a50fde314945e737810a63908640df91

SHA512
99a254d150d6e4b3497a4377416a6634d2bd61501ba50cc30ea999f9b813809d08e0f01e4463583998237674846b056df89c8bcb401c401e79bcf2329606c3d3

Download Submit
memory/2984-133-0x000001D3D9DA0000-0x000001D3D9DEA000-memory.dmp

Filesize
296KB

Download
memory/2984-164-0x000001D3DA2D0000-0x000001D3DA2E0000-memory.dmp

Filesize
64KB

Download