44caliber | 17a5e7c0ddc39e588648b9e84e2a4c6ee8243558a6bacc3eceedb8c57ae13e04

Analysis

max time kernel
122s
max time network
131s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08-03-2024 10:34

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General

Target

bb0a44e79b092106f1f55f80f5a5554c.exe
Size

320KB
MD5

bb0a44e79b092106f1f55f80f5a5554c
SHA1

63025a44274e6d89e95ed9c5cb79f8c3a371528b
SHA256

17a5e7c0ddc39e588648b9e84e2a4c6ee8243558a6bacc3eceedb8c57ae13e04
SHA512

12f82d46c5ac7a78742bc539018461d4699fd2297cf4adbf00d47d57452f2d013aab03644ec35398c66a5607a4ee1839c4287311947699bd92e3581af45fa0e3
SSDEEP

6144:tKAWzXyGLOeQS1+O8+Z6drfcF0NaanahA0z0CPI4O7c5l:tdWzXyGLOeb846djcFQEZOo

Score

10^/10

44caliber persistence stealer

Malware Config

Extracted

Family

44caliber

https://discordapp.com/api/webhooks/873206223183433798/33HU-Ko_-yJdLbMSPdpbWYalHeLEd56rzBIo2fa7IV1r_T7BoM0H46slF9msGWiznz2K

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Executes dropped EXE 1 IoCs

Processes:

aorbHRzPIL.exe

pid process

2984 aorbHRzPIL.exe

pid	process
2984	aorbHRzPIL.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

aorbHRzPIL.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\aorbHRzPIL = "C:\\Users\\Admin\\AppData\\Local\\Temp\\aorbHRzPIL.exe"	aorbHRzPIL.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\aorbHRzPIL = "C:\\Users\\Admin\\AppData\\Local\\Temp\\aorbHRzPIL.exe"	aorbHRzPIL.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bb0a44e79b092106f1f55f80f5a5554c.exeaorbHRzPIL.exe

description pid process

Token: SeDebugPrivilege 2096 bb0a44e79b092106f1f55f80f5a5554c.exe
Token: SeDebugPrivilege 2984 aorbHRzPIL.exe

description	pid	process
Token: SeDebugPrivilege	2096	bb0a44e79b092106f1f55f80f5a5554c.exe
Token: SeDebugPrivilege	2984	aorbHRzPIL.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

bb0a44e79b092106f1f55f80f5a5554c.exeaorbHRzPIL.exe

description	pid	process	target process
PID 2096 wrote to memory of 2984	2096	bb0a44e79b092106f1f55f80f5a5554c.exe	aorbHRzPIL.exe
PID 2096 wrote to memory of 2984	2096	bb0a44e79b092106f1f55f80f5a5554c.exe	aorbHRzPIL.exe
PID 2096 wrote to memory of 2984	2096	bb0a44e79b092106f1f55f80f5a5554c.exe	aorbHRzPIL.exe
PID 2984 wrote to memory of 2552	2984	aorbHRzPIL.exe	dw20.exe
PID 2984 wrote to memory of 2552	2984	aorbHRzPIL.exe	dw20.exe
PID 2984 wrote to memory of 2552	2984	aorbHRzPIL.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\bb0a44e79b092106f1f55f80f5a5554c.exe
"C:\Users\Admin\AppData\Local\Temp\bb0a44e79b092106f1f55f80f5a5554c.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\aorbHRzPIL.exe
  "C:\Users\Admin\AppData\Local\Temp\aorbHRzPIL.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 488
    3⤵
    PID:2552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
320KB

MD5
bb0a44e79b092106f1f55f80f5a5554c

SHA1
63025a44274e6d89e95ed9c5cb79f8c3a371528b

SHA256
17a5e7c0ddc39e588648b9e84e2a4c6ee8243558a6bacc3eceedb8c57ae13e04

SHA512
12f82d46c5ac7a78742bc539018461d4699fd2297cf4adbf00d47d57452f2d013aab03644ec35398c66a5607a4ee1839c4287311947699bd92e3581af45fa0e3

Download Submit
memory/2096-7-0x000007FEF5750000-0x000007FEF60ED000-memory.dmp

Filesize
9.6MB

Download
memory/2096-8-0x000007FEF5750000-0x000007FEF60ED000-memory.dmp

Filesize
9.6MB

Download
memory/2552-14-0x0000000001CF0000-0x0000000001CF1000-memory.dmp

Filesize
4KB

Download
memory/2984-10-0x0000000000B20000-0x0000000000B72000-memory.dmp

Filesize
328KB

Download
memory/2984-11-0x000007FEF4DB0000-0x000007FEF574D000-memory.dmp

Filesize
9.6MB

Download
memory/2984-13-0x000007FEF4DB0000-0x000007FEF574D000-memory.dmp

Filesize
9.6MB

Download
memory/2984-12-0x0000000000560000-0x00000000005E0000-memory.dmp

Filesize
512KB

Download
memory/2984-15-0x000007FEF4DB0000-0x000007FEF574D000-memory.dmp

Filesize
9.6MB

Download
memory/2984-16-0x0000000000560000-0x00000000005E0000-memory.dmp

Filesize
512KB

Download