44caliber | cc282f5c2ff88929a1190177ced0ee50abf25e04228663ff4a6576922a928f1d

General

Target

518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.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 evasion persistence spyware stealer

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
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2680 netsh.exe

pid	process
2680	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:

518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.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

4156 1.exe
2168 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-1-5-21-2177723727-746291240-1644359950-1000\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

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

System Information Discovery
T1082

flow	ioc
6	freegeoip.app
7	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
4156	1.exe
4156	1.exe
4156	1.exe
4156	1.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe
2168	3.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

3.exe

pid process

2168 3.exe

pid	process
2168	3.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

Processes:

1.exe3.exe

description	pid	process
Token: SeDebugPrivilege	4156	1.exe
Token: SeDebugPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe
Token: 33	2168	3.exe
Token: SeIncBasePriorityPrivilege	2168	3.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe3.exe

description	pid	process	target process
PID 4228 wrote to memory of 4156	4228	518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe	1.exe
PID 4228 wrote to memory of 4156	4228	518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe	1.exe
PID 4228 wrote to memory of 2168	4228	518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe	3.exe
PID 4228 wrote to memory of 2168	4228	518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe	3.exe
PID 4228 wrote to memory of 2168	4228	518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe	3.exe
PID 2168 wrote to memory of 2680	2168	3.exe	netsh.exe
PID 2168 wrote to memory of 2680	2168	3.exe	netsh.exe
PID 2168 wrote to memory of 2680	2168	3.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe
"C:\Users\Admin\AppData\Local\Temp\518f22ac3dfb39779d6b21fdd230b71db39453f73b42f411009a0afe7dbbe818.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4228

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:4156

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:2168

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:2680

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
dca0fd09bfd3bf8d70e30f542fd94e74

SHA1
ac05b021ff5a39b1cbf329a8dbb28fb8998ec165

SHA256
c93183cf06d8f74a027e065c903ec7e63f60350484ae0fbb4607217194002203

SHA512
1cc3886f9779f204de902d042d1d4c61338bc6dc9e04d40efced671e7082b38451992b13c95956b74d801ac38440a45635e085830f8045dbba5c430abe39ea35

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
1KB

MD5
968949ecb7f0ce729a916be0c84906e5

SHA1
b579c18d2c9d6e9c27a8daff64ccd30917c35e1e

SHA256
e49e5aed8dc027d4e2007c368c7c74d0ff46e0f1101fba5c981cfd068552fb49

SHA512
14c147064a581fbeb9bef920f82174ff1a8565d9f36f1f179b887d2d205abc3de7e1f135db9b272b00d51e643341bc61abfdd3e57a4e3707cf58af4191509f6f

Download Submit
memory/2168-55-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/2168-54-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/2168-56-0x0000000000B80000-0x0000000000B90000-memory.dmp

Filesize
64KB

Download
memory/2168-150-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/2168-151-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/2168-152-0x0000000000B80000-0x0000000000B90000-memory.dmp

Filesize
64KB

Download
memory/4156-46-0x000001ECAF4E0000-0x000001ECAF4F0000-memory.dmp

Filesize
64KB

Download
memory/4156-45-0x00007FFE228B0000-0x00007FFE23371000-memory.dmp

Filesize
10.8MB

Download
memory/4156-14-0x000001ECAD6A0000-0x000001ECAD72A000-memory.dmp

Filesize
552KB

Download
memory/4156-148-0x00007FFE228B0000-0x00007FFE23371000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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