b21c75ceb2073eb8e10594498f8990cccf1c5740ae398a292e84a3f0e9e86f41

General

Target

bb4f9c9345dc04001c355117917d78b7.exe
Size

907KB
MD5

bb4f9c9345dc04001c355117917d78b7
SHA1

132dd14f0df9ab50d6f2880c9e0a95f33d6a65c3
SHA256

b21c75ceb2073eb8e10594498f8990cccf1c5740ae398a292e84a3f0e9e86f41
SHA512

dab65ba8a29960fbe8d68f3a86ce2a596658a071feab35e11b744332252a12e81fb75d69298c9ffce5b2e3479ab86786958550041a83da0021cee2e657cfb7ef
SSDEEP

24576:SaB8mgHnYu9GegGsWpHzuwJu0OcMN2Gsa/ZS1:DKm+Yu9epkzuwJu0dMIDgS

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2820	bb4f9c9345dc04001c355117917d78b7.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	bb4f9c9345dc04001c355117917d78b7.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	bb4f9c9345dc04001c355117917d78b7.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	pastebin.com
4	pastebin.com

Modifies system certificate store 2 TTPs 3 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	bb4f9c9345dc04001c355117917d78b7.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	bb4f9c9345dc04001c355117917d78b7.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	bb4f9c9345dc04001c355117917d78b7.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1736	bb4f9c9345dc04001c355117917d78b7.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1736	bb4f9c9345dc04001c355117917d78b7.exe
2820	bb4f9c9345dc04001c355117917d78b7.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2820	1736	bb4f9c9345dc04001c355117917d78b7.exe	29
PID 1736 wrote to memory of 2820	1736	bb4f9c9345dc04001c355117917d78b7.exe	29
PID 1736 wrote to memory of 2820	1736	bb4f9c9345dc04001c355117917d78b7.exe	29
PID 1736 wrote to memory of 2820	1736	bb4f9c9345dc04001c355117917d78b7.exe	29

C:\Users\Admin\AppData\Local\Temp\bb4f9c9345dc04001c355117917d78b7.exe
"C:\Users\Admin\AppData\Local\Temp\bb4f9c9345dc04001c355117917d78b7.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\bb4f9c9345dc04001c355117917d78b7.exe
  C:\Users\Admin\AppData\Local\Temp\bb4f9c9345dc04001c355117917d78b7.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of UnmapMainImage
  PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
67KB

MD5
753df6889fd7410a2e9fe333da83a429

SHA1
3c425f16e8267186061dd48ac1c77c122962456e

SHA256
b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

SHA512
9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4B0B.tmp

Filesize
175KB

MD5
dd73cead4b93366cf3465c8cd32e2796

SHA1
74546226dfe9ceb8184651e920d1dbfb432b314e

SHA256
a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

SHA512
ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

Download Submit
C:\Users\Admin\AppData\Local\Temp\bb4f9c9345dc04001c355117917d78b7.exe

Filesize
907KB

MD5
d7d5f24eef06863eaff89a97e96afca9

SHA1
5493f8d87da5db3fdc7ba942ea2246e8d715d50f

SHA256
8a752890d19cb50ae714833e916a58fc49461458bbb362de9d911990031fc690

SHA512
ff4c79c238aed3f412e88128c76818b6813fde801a67bd05d6e5850479d18744f4bd0e78f9fb1eabf99103a063e07384e6f73c54f0510fcc8bc505ee37ba0969

Download Submit
\Users\Admin\AppData\Local\Temp\bb4f9c9345dc04001c355117917d78b7.exe

Filesize
192KB

MD5
037fd6efa9276f4376813b1081c0bb02

SHA1
1403be718ff303109871c4b160e9f41d1b46d3a8

SHA256
243a2beadc71ea695e304390aec75b130650b6c844b245d5e63e23d85ad1a3e5

SHA512
2e9dbd63e2b2b4ca4b048e6160412ecf1c989d154f9a6a5184ef499a247f2590cdbec6000bd2e5b3ce152795de66a28b49bef4b8157b2f21d918b6e58d22046d

Download Submit
memory/1736-14-0x00000000031F0000-0x00000000032D8000-memory.dmp

Filesize
928KB

Download
memory/1736-0-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1736-13-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/1736-3-0x00000000015B0000-0x0000000001698000-memory.dmp

Filesize
928KB

Download
memory/1736-1-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/2820-16-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2820-19-0x0000000000270000-0x0000000000358000-memory.dmp

Filesize
928KB

Download
memory/2820-24-0x0000000002FC0000-0x000000000307B000-memory.dmp

Filesize
748KB

Download
memory/2820-23-0x0000000000400000-0x0000000000498000-memory.dmp

Filesize
608KB

Download
memory/2820-81-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2820-84-0x000000000EC40000-0x000000000ECD8000-memory.dmp

Filesize
608KB

Download

Analysis

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