44caliber | 518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818

General

Target

3E5BA25AA4F23CEB11BE209D1967E341.exe
Size

460KB
MD5

3e5ba25aa4f23ceb11be209d1967e341
SHA1

c25a05acb5231776456d08fad7df0e48d92931c0
SHA256

518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818
SHA512

184243d51766bf8d292308e0177046f88e0eb55201eddc9d14670dd3d526c5ed6026c03c88227698670f451f43a3e4f1378f51f2334a9b54d83bb2bc677b0c04
SSDEEP

6144:jE+yclwQKjdn+WPtYVJIoBfRT+tkbOSeC2xDjAzQeOOg7Y55HkVSGsc:jBdlwHRn+WlYV+8T+tkKC0EEE17HkV8c

Score

10^/10

44caliber njrat evasion persistence spyware stealer trojan

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1199323175729758268/CBdP8e3cXbL0ED8xKBhMw0ikKHmITu-6CI4WjfttZm2aWGZGjp43Msrjwp8AVeEBf6T1

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

452 netsh.exe

pid	process
452	netsh.exe

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:

3E5BA25AA4F23CEB11BE209D1967E341.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	3E5BA25AA4F23CEB11BE209D1967E341.exe

Drops startup file 2 IoCs

Processes:

3.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9902b29d6de7130c2f409ab27fb09fa7.exe	3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9902b29d6de7130c2f409ab27fb09fa7.exe	3.exe

Executes dropped EXE 2 IoCs

Processes:

1.exe3.exe

pid process

2464 1.exe
2236 3.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9902b29d6de7130c2f409ab27fb09fa7 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\3.exe\" .."	3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9902b29d6de7130c2f409ab27fb09fa7 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\3.exe\" .."	3.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

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

System Information Discovery
T1082

flow	ioc
5	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:

1.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

1.exe3.exe

pid	process
2464	1.exe
2464	1.exe
2464	1.exe
2464	1.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe
2236	3.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

3.exe

pid process

2236 3.exe

pid	process
2236	3.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

Processes:

1.exe3.exe

description	pid	process
Token: SeDebugPrivilege	2464	1.exe
Token: SeDebugPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe
Token: 33	2236	3.exe
Token: SeIncBasePriorityPrivilege	2236	3.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

3E5BA25AA4F23CEB11BE209D1967E341.exe3.exe

description	pid	process	target process
PID 2436 wrote to memory of 2464	2436	3E5BA25AA4F23CEB11BE209D1967E341.exe	1.exe
PID 2436 wrote to memory of 2464	2436	3E5BA25AA4F23CEB11BE209D1967E341.exe	1.exe
PID 2436 wrote to memory of 2236	2436	3E5BA25AA4F23CEB11BE209D1967E341.exe	3.exe
PID 2436 wrote to memory of 2236	2436	3E5BA25AA4F23CEB11BE209D1967E341.exe	3.exe
PID 2436 wrote to memory of 2236	2436	3E5BA25AA4F23CEB11BE209D1967E341.exe	3.exe
PID 2236 wrote to memory of 452	2236	3.exe	netsh.exe
PID 2236 wrote to memory of 452	2236	3.exe	netsh.exe
PID 2236 wrote to memory of 452	2236	3.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\3E5BA25AA4F23CEB11BE209D1967E341.exe
"C:\Users\Admin\AppData\Local\Temp\3E5BA25AA4F23CEB11BE209D1967E341.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2436

C:\Users\Admin\AppData\Local\Temp\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2464

C:\Users\Admin\AppData\Local\Temp\3.exe
"C:\Users\Admin\AppData\Local\Temp\3.exe"
2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\3.exe" "3.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

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

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Downloads

C:\ProgramData\44\Process.txt
Filesize
1KB

MD5
9251796ccc00a1aad4a7bbff16f3eac5

SHA1
2947320d90c56ad43d3e22a4b3241cc73649159e

SHA256
1757a944349855ce1c6340fcc44e7e1c652fc5981dc96bb01358d7edb7d05e26

SHA512
8e87fb64424e45c8b1cdfcb806bd6771671d16e61a0a2f4b9c26fd159f1d10bbde3aaa55c151db6f276c1328b1cf43a2cf00a84cf408b8cfc47cf2661ad66c9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\1.exe
Filesize
534KB

MD5
0ce3051b867d50aa172d1b332f156e3e

SHA1
f87defe312cb3a5efea3f845d187762e153bddab

SHA256
5ac29f18472f943f2eb3c256fdbfe251b04ca66afc22fcba65183b0509feb529

SHA512
5169a3acd3c79cc4d22bf3a1f4d9770797d2c31503bab1022a153ad56c382e495de2ce06a8a04b3bb4b2fb2c666575dcdefa26533ff5affc4b6ce126e2166193

Download Submit
C:\Users\Admin\AppData\Local\Temp\3.exe
Filesize
37KB

MD5
6d11195af6cca04eb53eccf9aaf329dc

SHA1
85f70d6fcff5212649deaf1d18e66d563727c186

SHA256
4c690a994e22eb6aa31af6e552b610ea1ff01ac58622d56232ad6e820c2aa414

SHA512
76a59b8164a478691d14be7e5d002280ec5453cb6d9f73387ad45e49755d03927f3814c42df987a4dc61c942e9e7b25ab9559651981020bf53ad56a8e4e65c8b

Download Submit
memory/2236-149-0x0000000072970000-0x0000000072F21000-memory.dmp

Filesize
5.7MB

Download
memory/2236-151-0x0000000072970000-0x0000000072F21000-memory.dmp

Filesize
5.7MB

Download
memory/2236-150-0x00000000010B0000-0x00000000010C0000-memory.dmp

Filesize
64KB

Download
memory/2236-57-0x0000000072970000-0x0000000072F21000-memory.dmp

Filesize
5.7MB

Download
memory/2236-56-0x00000000010B0000-0x00000000010C0000-memory.dmp

Filesize
64KB

Download
memory/2236-55-0x0000000072970000-0x0000000072F21000-memory.dmp

Filesize
5.7MB

Download
memory/2464-47-0x000001676ECC0000-0x000001676ECD0000-memory.dmp

Filesize
64KB

Download
memory/2464-147-0x00007FFB6ADC0000-0x00007FFB6B881000-memory.dmp

Filesize
10.8MB

Download
memory/2464-46-0x00007FFB6ADC0000-0x00007FFB6B881000-memory.dmp

Filesize
10.8MB

Download
memory/2464-14-0x0000016754600000-0x000001675468A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads