44caliber | 38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab

Analysis

max time kernel
83s
max time network
104s
platform
windows10-1703_x64
resource
win10-20240611-en
resource tags

arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system
submitted
14-09-2024 10:32

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General

Target

Loader.exe
Size

274KB
MD5

c0feb087f1cfa85fdb001e059f4c95c7
SHA1

1d9ab2eb37f85bea36f3e6ded442154181c96964
SHA256

38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab
SHA512

99d641dcebec431d905b83ea89b5b5fadd5c029215345834b604aeca23d25d236bbbe65c2d3179ad9d7597764d1791d9cfd18b3dc2d463acda6e1e72b6159a50
SSDEEP

6144:cf+BLtABPDsth6Ej/UZkI4TjkRy5fafTy4lI1D080T:vtK+I4TjkRyTF1DcT

Score

10^/10

44caliber credential_access spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1280107935317495880/Q8mmvXU6Bc1Q-R-2e0aAMsbedaMqyt0txCOBc8XSsTRNeUIepUtoX2DE4a6MxP9SzEFB

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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.

flow	ioc
1	freegeoip.app
2	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
4756	Loader.exe
4756	Loader.exe
4756	Loader.exe
4756	Loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4756	Loader.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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:\ProgramData\44\Process.txt

Filesize
278B

MD5
e05ff83d2ad2712ad72e6dac78141445

SHA1
d4e5d3b8d45082337499d14a6c09f5a1312d569a

SHA256
8281031d1657563fc157f41e5c76bd082811f2287e5f6061469e6a2cff879977

SHA512
c5d728f997870bce961d5ec99267410b9437767726ade2c12150787c9558a853afaab55915e0b0a0052f55df584633f1caf32e62f221d1001ef4987b528f24c1

Download Submit
C:\ProgramData\44\Process.txt

Filesize
1KB

MD5
d99573ab312cc05a76b96a2471ded311

SHA1
2bec4f5b31079360e340a0ac7744a6d85bced975

SHA256
bf5ea54b5fe1dac90a3354624ff76f93b195dd86e16d7dd383fda79c09b6e1a9

SHA512
56f006ce0756e9bd16527830c64e4bdec1a3fc0e715b362197900da86bb234308da76b552dc6aca5af33db467dcfc50bcdee33c50efd0edb723a17b842f6925b

Download Submit
memory/4756-0-0x00007FFF8BF33000-0x00007FFF8BF34000-memory.dmp

Filesize
4KB

Download
memory/4756-1-0x000001FC6CCC0000-0x000001FC6CD0A000-memory.dmp

Filesize
296KB

Download
memory/4756-19-0x00007FFF8BF30000-0x00007FFF8C91C000-memory.dmp

Filesize
9.9MB

Download
memory/4756-92-0x00007FFF8BF30000-0x00007FFF8C91C000-memory.dmp

Filesize
9.9MB

Download