44caliber | 35b49b5014f2f16bc9565866e1d3394b39eefe7462d671ebc4c1b3c61dce30a2

General

Target

cad08e451d55430d75c26f822b2a2b1b.exe
Size

463KB
MD5

cad08e451d55430d75c26f822b2a2b1b
SHA1

b86360aa685f4376381292d8564333142dee73e0
SHA256

35b49b5014f2f16bc9565866e1d3394b39eefe7462d671ebc4c1b3c61dce30a2
SHA512

121dd30c33e9792cd99e031cac5eb07b77ddea688658dfe6e0087409fd3377c23e2ecacbe07e8a64856bb625f62954874a2709fb4f3e274829ca6b3a22981c7c
SSDEEP

12288:D8oHBAoI2UUfwt53D3NPEXkh18ICbTLOIX:goHBAF5r3DMkhXCbTSIX

Score

10^/10

44caliber spyware stealer vmprotect

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/894942702326677514/imJ4lUzTMjTxjg87EEJcDzxrAj6U6amcp4yRwcfUvSVVePmrzxPj_IrqfdM_lnSBl-27

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

cad08e451d55430d75c26f822b2a2b1b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	cad08e451d55430d75c26f822b2a2b1b.exe

Executes dropped EXE 1 IoCs

Processes:

Insidious.exe

pid process

3848 Insidious.exe
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

pid	process
3848	Insidious.exe

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral2/memory/1288-0-0x0000000000100000-0x00000000001C2000-memory.dmp	vmprotect

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

30 freegeoip.app
31 freegeoip.app
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
30	freegeoip.app
31	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:

Insidious.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Insidious.exe

pid process

3848 Insidious.exe
3848 Insidious.exe
3848 Insidious.exe
3848 Insidious.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious.exe

description pid process

Token: SeDebugPrivilege 3848 Insidious.exe

pid	process
3848	Insidious.exe
3848	Insidious.exe
3848	Insidious.exe
3848	Insidious.exe

description	pid	process
Token: SeDebugPrivilege	3848	Insidious.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

cad08e451d55430d75c26f822b2a2b1b.exe

description	pid	process	target process
PID 1288 wrote to memory of 3848	1288	cad08e451d55430d75c26f822b2a2b1b.exe	Insidious.exe
PID 1288 wrote to memory of 3848	1288	cad08e451d55430d75c26f822b2a2b1b.exe	Insidious.exe

C:\Users\Admin\AppData\Local\Temp\cad08e451d55430d75c26f822b2a2b1b.exe
"C:\Users\Admin\AppData\Local\Temp\cad08e451d55430d75c26f822b2a2b1b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1288

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Insidious.exe

Filesize
274KB

MD5
4a951fca915ae376615cc17c71df61dc

SHA1
092835f51b923d2869bc9036b784e6c8a5ea4f4d

SHA256
7bb788f7b890c79dfb38ec37ce9fee7a9d28f3578d9a50acc28b837cf89e2092

SHA512
c09c3ea58f96d88bbb2129b91e5013e9e068a81600cc04eb839c733b9bb67746ee0d03580d48706357640c12db0e76816479576c133e99ebc129ff587292796e

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

Filesize
1KB

MD5
1741f2df6b999ddf8353fc9e6b06bd53

SHA1
3b13d40bdbf21e87bda007568dfeb093e223e897

SHA256
ff841247262e643fb0f662983bd9a3c2f120e92124ebf806d2e59cbfea12cfdf

SHA512
e131212944099096cff9fdd930438bc821b3f1d3db22b6846dcac6615ae4549190aca442221c04dc66fff5f2b1cc8388f094569e0e0eb5cba914dbdf4d9cf622

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

Filesize
451B

MD5
bf3253527800fb4ac3bae0183bf2eb72

SHA1
a0de5e92bab7a2e4fcc90de425bcae3260033718

SHA256
2a07cec64d479e20d202c141fc8f9d7aa3c58e3b03e1c9cd468b8bf62a9075c9

SHA512
e43207ed8ab47637bff736b0d4e72ba0ddb023c948bd1140fbf4e03849456dfa00b7df9025d39bcda2c17db3dc20748868d5cb1c1e8b554b0a71d469b7639527

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

Filesize
651B

MD5
ad5ccb5824157f1c562fd0d85e86a8d1

SHA1
3dada1bb3ea4129b7f3b476a9681c4dcb85c0e0b

SHA256
8155bd3c6f4e164a387882ee88fee484a4203d02341c5ba8a63c53cac7725b70

SHA512
a18a8316965f56ffa64c6526e86124ad5cd5a549892579661b7a415abcf3ed92e3f285b89a6b6538e48480bd71c33c0901c1c4312726c83a211d28b3e6a269a5

Download Submit
memory/1288-19-0x00007FFC0B790000-0x00007FFC0C251000-memory.dmp

Filesize
10.8MB

Download
memory/1288-4-0x0000000002240000-0x0000000002250000-memory.dmp

Filesize
64KB

Download
memory/1288-0-0x0000000000100000-0x00000000001C2000-memory.dmp

Filesize
776KB

Download
memory/1288-3-0x0000000002220000-0x0000000002221000-memory.dmp

Filesize
4KB

Download
memory/1288-2-0x00007FFC0B790000-0x00007FFC0C251000-memory.dmp

Filesize
10.8MB

Download
memory/1288-1-0x00007FFC0B790000-0x00007FFC0C251000-memory.dmp

Filesize
10.8MB

Download
memory/3848-18-0x00000000007A0000-0x00000000007EA000-memory.dmp

Filesize
296KB

Download
memory/3848-21-0x0000000002880000-0x0000000002890000-memory.dmp

Filesize
64KB

Download
memory/3848-20-0x00007FFC0B790000-0x00007FFC0C251000-memory.dmp

Filesize
10.8MB

Download
memory/3848-142-0x000000001C090000-0x000000001C239000-memory.dmp

Filesize
1.7MB

Download
memory/3848-143-0x00007FFC0B790000-0x00007FFC0C251000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads