f4503973e8d76e0bf7d1815af451ed6fef65e22512536c00f7f8d260a297613d

Analysis

max time kernel
52s
max time network
51s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 19:53

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General

Target

Cheques_Protestar_DOC.exe
Size

210KB
MD5

a703fe322747737cad0de76f633c3640
SHA1

5523c240902d429cb36107dadc369148158c6ca2
SHA256

e5eddca42cad97103ff7acff8856aff5ae60862ff148d88973be5f90e12d31b8
SHA512

5ea870da9a55efff9ebada3182eeaaeafa6d3f8492c1d5c8377b1f5f5838e9d7579e069e33fec8359f2f4fdce6a4d3b69909c06ee813157e045bcdd906406ca0
SSDEEP

6144:y8dNXSEb7lqWU4imIAFDKF5/NkKhSIjOHj:Jb7g8mnNkmlOD

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1632-57-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-59-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-60-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-62-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-64-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-65-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-66-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1632-67-0x0000000000400000-0x0000000000461000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
1636	Cheques_Protestar_DOC.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1636 set thread context of 1632	1636	Cheques_Protestar_DOC.exe	27

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27
PID 1636 wrote to memory of 1632	1636	Cheques_Protestar_DOC.exe	27

C:\Users\Admin\AppData\Local\Temp\Cheques_Protestar_DOC.exe
"C:\Users\Admin\AppData\Local\Temp\Cheques_Protestar_DOC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Users\Admin\AppData\Local\Temp\Cheques_Protestar_DOC.exe
  "C:\Users\Admin\AppData\Local\Temp\Cheques_Protestar_DOC.exe"
  2⤵
  PID:1632

Network

MITRE ATT&CK Enterprise v6

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

\Users\Admin\AppData\Local\Temp\nsy1C7.tmp\hierarchies.dll

Filesize
37KB

MD5
a8ca459be11daf988272ac5c26cf1d7c

SHA1
7d859138321dc206db3cb110b3d082ba7541abda

SHA256
3534f12fed91ca8377ff9b2b658301d0b5916e4d27a3959f2066d52dd3ab2f4b

SHA512
2181dcf09c944065f495ac8761374f31e079d54be2cca90b43be7f359d5b4cc7f805b20eb067891dd1096e2fefeef512bd7fe78e11bf1edb529cb9971348bfcf

Download Submit
memory/1632-56-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-57-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-59-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-60-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-62-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-64-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-65-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-66-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1632-67-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1636-54-0x0000000075071000-0x0000000075073000-memory.dmp

Filesize
8KB

Download