44caliber | ef36a160c8635bfd24a01d8bda1b9c2fc790ea1c9838caa6be7b83ff5fea2771

Analysis

max time kernel
144s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
17-01-2024 01:45

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General

Target

616b975815ad492b5140808909a6b70b.exe
Size

274KB
MD5

616b975815ad492b5140808909a6b70b
SHA1

78040b08d3937ba80ddaef3773cfe9caa861e8a5
SHA256

ef36a160c8635bfd24a01d8bda1b9c2fc790ea1c9838caa6be7b83ff5fea2771
SHA512

5e1df86b31926c3198a4d389bf0394023a5958fd401cd16aaad3b0efbdc3930273e74198cb6f389c27c0bf87f0fc8773737341d307bbc34109a56be2e2605d56
SSDEEP

6144:7f+BLtABPD9FhST/JP9ruWhSg41V6GIeyXGRA1D0XcI:1FGP9ruWjY69eyXL1D/I

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/873841563778813972/5dEent_d3goCqGTPSzCw7iLShnu_tiyfTGpjs7mChr2lUPh4mIxJRrrYWAb_emPwBGNb

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

Data from Local System
T1005

Credentials In Files
T1552.001
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

2 freegeoip.app
5 freegeoip.app

flow	ioc
2	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

Processes:

616b975815ad492b5140808909a6b70b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	616b975815ad492b5140808909a6b70b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	616b975815ad492b5140808909a6b70b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

616b975815ad492b5140808909a6b70b.exe

pid	process
1528	616b975815ad492b5140808909a6b70b.exe
1528	616b975815ad492b5140808909a6b70b.exe
1528	616b975815ad492b5140808909a6b70b.exe
1528	616b975815ad492b5140808909a6b70b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

616b975815ad492b5140808909a6b70b.exesvchost.exe

description pid process

Token: SeDebugPrivilege 1528 616b975815ad492b5140808909a6b70b.exe
Token: SeManageVolumePrivilege 4680 svchost.exe

description	pid	process
Token: SeDebugPrivilege	1528	616b975815ad492b5140808909a6b70b.exe
Token: SeManageVolumePrivilege	4680	svchost.exe

C:\Users\Admin\AppData\Local\Temp\616b975815ad492b5140808909a6b70b.exe
"C:\Users\Admin\AppData\Local\Temp\616b975815ad492b5140808909a6b70b.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1528

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:2424

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4680

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt
Filesize
1KB

MD5
fb2baf9ae4490fbb52036dfb03893ceb

SHA1
caaaea5867636448c702051c9987a4fbd602dd12

SHA256
a3c6c2c98f174ebb0bdc3b8f2f2d5a6fe26725c799b472b454e70e54897888d2

SHA512
2167590a05ad5e56de27ee24a42993ec8539819647ccdb105c1f4e56ae31995b62ec3069e7752c99dded4956ac0a775d3fb2e3730c781c808d31b4283e67a3ab

Download Submit
memory/1528-0-0x0000000000800000-0x000000000084A000-memory.dmp

Filesize
296KB

Download
memory/1528-1-0x00007FF86CBF0000-0x00007FF86D6B1000-memory.dmp

Filesize
10.8MB

Download
memory/1528-16-0x00000000028C0000-0x00000000028D0000-memory.dmp

Filesize
64KB

Download
memory/1528-124-0x00007FF86CBF0000-0x00007FF86D6B1000-memory.dmp

Filesize
10.8MB

Download
memory/4680-125-0x000001F3E1040000-0x000001F3E1050000-memory.dmp

Filesize
64KB

Download
memory/4680-141-0x000001F3E1140000-0x000001F3E1150000-memory.dmp

Filesize
64KB

Download
memory/4680-157-0x000001F3E9480000-0x000001F3E9481000-memory.dmp

Filesize
4KB

Download
memory/4680-159-0x000001F3E94B0000-0x000001F3E94B1000-memory.dmp

Filesize
4KB

Download
memory/4680-160-0x000001F3E94B0000-0x000001F3E94B1000-memory.dmp

Filesize
4KB

Download
memory/4680-161-0x000001F3E95C0000-0x000001F3E95C1000-memory.dmp

Filesize
4KB

Download