44caliber | 44cf30bb3e4623c4374ab4132bd419d3a63f119b36eaf66f1a5258e36df3b60a

General

Target

48ad7db5fb10dd9b1c6817d5a9c34865.exe
Size

2.2MB
MD5

48ad7db5fb10dd9b1c6817d5a9c34865
SHA1

2fd68670f13f6335a2361fbdd7ed6c36b9f4863c
SHA256

44cf30bb3e4623c4374ab4132bd419d3a63f119b36eaf66f1a5258e36df3b60a
SHA512

7782826d586098b94e2c10a801881e0104784406d9d496c98b2932a33b28f2b0724be7eb25f158223f84483795b4bb768f7e2ad15799c9cb4b2577888909c3fb
SSDEEP

49152:pSezyzdsk+1US6FOZyj2Zi8kwUP+9uNMYuv+ShQFZS:pSdsk+ySemg2Iw0+YChv+Shx

Score

10^/10

44caliber evasion spyware stealer trojan

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/850985103400108043/qMVlcxRCEtOy4d0lLo-ckGGqIgWka8O5mwrGC7NwW7qRJs5beglorhRUk-uRy4jQ1Cbz

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	48ad7db5fb10dd9b1c6817d5a9c34865.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Executes dropped EXE 2 IoCs

Processes:

Insidious — êîïèÿ.exe12312.exe

pid process

2416 Insidious — êîïèÿ.exe
1236 12312.exe
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Wine 48ad7db5fb10dd9b1c6817d5a9c34865.exe
Loads dropped DLL 2 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

pid process

3052 48ad7db5fb10dd9b1c6817d5a9c34865.exe
3052 48ad7db5fb10dd9b1c6817d5a9c34865.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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
2416	Insidious — êîïèÿ.exe
1236	12312.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Wine	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	48ad7db5fb10dd9b1c6817d5a9c34865.exe

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

3 freegeoip.app
2 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

pid process

3052 48ad7db5fb10dd9b1c6817d5a9c34865.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
3	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

Processes:

Insidious — êîïèÿ.exe

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

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe12312.exeInsidious — êîïèÿ.exe

pid	process
3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe
1236	12312.exe
2416	Insidious — êîïèÿ.exe
2416	Insidious — êîïèÿ.exe
2416	Insidious — êîïèÿ.exe
2416	Insidious — êîïèÿ.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious — êîïèÿ.exe

description pid process

Token: SeDebugPrivilege 2416 Insidious — êîïèÿ.exe

description	pid	process
Token: SeDebugPrivilege	2416	Insidious — êîïèÿ.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	pid	process	target process
PID 3052 wrote to memory of 2416	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 3052 wrote to memory of 2416	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 3052 wrote to memory of 2416	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 3052 wrote to memory of 2416	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 3052 wrote to memory of 1236	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 3052 wrote to memory of 1236	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 3052 wrote to memory of 1236	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 3052 wrote to memory of 1236	3052	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe

C:\Users\Admin\AppData\Local\Temp\48ad7db5fb10dd9b1c6817d5a9c34865.exe
"C:\Users\Admin\AppData\Local\Temp\48ad7db5fb10dd9b1c6817d5a9c34865.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3052

C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2416

C:\Users\Admin\AppData\Local\Temp\12312.exe
"C:\Users\Admin\AppData\Local\Temp\12312.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1236

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\12312.exe
Filesize
60KB

MD5
f18cf2c76c5e8283a9d81640b198e01b

SHA1
29d2b98d71a263ee319cc65109e7325604d203d0

SHA256
b54d12aafa616be9524995f8df0527848776c08432556c178667e1429744e34d

SHA512
9543bd395281d41c7fafc470812bb920cbd70b918c864b3b245451a2b679ab621401c4857c8da000f952ae73e3c3f084aaaf74a15dc91966caf7680b84f1da04

Download Submit
C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe
Filesize
99KB

MD5
004988032f3394e039a0c4dbe71f8fb8

SHA1
aeaf78fe612e2e36739d16fda575750bc2fca4f9

SHA256
d631435fdf8d005ca6cfa0998072fa50e660282d17a214ca71d17cb55ab3d553

SHA512
d5f99c20dbcbee3f71cf738dbf7637e40ea7bf0507c6d356d9874b63152fbf7980fd1e9b3f20c1318140b91f595ac2d7a116c581b0e0147efe64ce9924731fc9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe
Filesize
144KB

MD5
0a46ca97a46f53213a7c17b436d1c4ec

SHA1
99959e543f07511e9bfc969c4f5f461b9782ece5

SHA256
7ea8e0a81e5983288005ca07aae6f37c974e8401a55e7fd4b1b3498ed784a2e6

SHA512
ccb32574b0d42fc566a0851bcc5a21a3d6d621c6d42d4591a99f92e432b562fbfb4b4567f09dc66b5a6a01afbf601781853f23b1e4eb6cd27298243fde5bddb8

Download Submit
\Users\Admin\AppData\Local\Temp\12312.exe
Filesize
51KB

MD5
1c3a060404d34c0634d2cc1b3a71060c

SHA1
3fa6a2623e4ad01a3cb89121dc2114228a3c0b9f

SHA256
aaec7f71055e66ad0d86b1e45d3c8ed9dcf8ceb3c61cb4f225f22a606442e1aa

SHA512
20c3ef485661c569326b0e0eb511390e9cf624acb1fc87a0473d4e9f1d8499904a16254d0e9eb818005d8685093e2b88fb6cbeba85b0969323022f8c7e28f13a

Download Submit
\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe
Filesize
209KB

MD5
d7430a5ffd13839637a6849b0706c019

SHA1
6b9a3a42a50acaf37581ca692fef9b3850598975

SHA256
572fe02ca4e18bf6838478c981e50184455729785f88abb265a55e94f6a6dc82

SHA512
d5deb78cceead63a5d35ce7bd8220173dfce13ad21f54a2e1456eb45f5c2b89775823bb387f3f4165dc9648f7fb0489fe2852a0bdb7f2b18c500eea24e834153

Download Submit
memory/2416-71-0x000007FEF57A0000-0x000007FEF618C000-memory.dmp

Filesize
9.9MB

Download
memory/2416-22-0x00000000003E0000-0x0000000000460000-memory.dmp

Filesize
512KB

Download
memory/2416-21-0x000007FEF57A0000-0x000007FEF618C000-memory.dmp

Filesize
9.9MB

Download
memory/2416-20-0x0000000000A00000-0x0000000000A4A000-memory.dmp

Filesize
296KB

Download
memory/3052-6-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/3052-4-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/3052-5-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download
memory/3052-19-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/3052-0-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/3052-7-0x0000000000940000-0x0000000000941000-memory.dmp

Filesize
4KB

Download
memory/3052-3-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/3052-1-0x0000000077580000-0x0000000077582000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads