b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d

General

Target

b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe
Size

8KB
MD5

6051d31c1d32d6acd1960bf51b4e633a
SHA1

5ef85f6fd154d3b20d2ec3576318b6c951d1a70f
SHA256

b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d
SHA512

4f33a32cf02e28ef9a27bbdd566a28cfa9e1dac88761074f479b32a061ac9876a6e6e22e0d161873819ec9ac568fcf163a2dc30fad49ae89a4b3a10503c752de
SSDEEP

192:py3AMA5zWJLFS0DoT1J6FaNJhLkwcud2DH9VwGfctlnO:pywMcSJ5Nm1waNJawcudoD7Ui

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
364	b2e.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/692-54-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral1/memory/692-65-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
692	b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe
692	b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe

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 8 IoCs

description	pid	Process	procid_target
PID 692 wrote to memory of 364	692	b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe	29
PID 692 wrote to memory of 364	692	b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe	29
PID 692 wrote to memory of 364	692	b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe	29
PID 692 wrote to memory of 364	692	b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe	29
PID 364 wrote to memory of 1808	364	b2e.exe	30
PID 364 wrote to memory of 1808	364	b2e.exe	30
PID 364 wrote to memory of 1808	364	b2e.exe	30
PID 364 wrote to memory of 1808	364	b2e.exe	30

C:\Users\Admin\AppData\Local\Temp\b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe
"C:\Users\Admin\AppData\Local\Temp\b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:692
- C:\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe
  "C:\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe" C:\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe C:\Users\Admin\AppData\Local\Temp "C:\Users\Admin\AppData\Local\Temp\b641fd8b77d6f6e0ae9f703fda4556bdca0daf52c7092ffe4ad0eaf39dbf716d.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:364
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\907.tmp\batchfile.bat" "
    3⤵
    PID:1808

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe

Filesize
8KB

MD5
9cf7c23271c7db723f4c77bba4b8db1f

SHA1
ccb77be0006b9480e7473173098bf93fe4c6f3b9

SHA256
d534b9ddc3d83ce1be80d941cc18aada3353b06c300cf96707b2f8f13276f45c

SHA512
2236c5b93e03f11e14399e3cc335a5c53ac6a33ffcd1ae873c5be49390fb3d51fb1f44abdacaedfff5b07e745f607718fcc2ba84d34ef7e403abcda651758ddb

Download Submit
C:\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe

Filesize
8KB

MD5
9cf7c23271c7db723f4c77bba4b8db1f

SHA1
ccb77be0006b9480e7473173098bf93fe4c6f3b9

SHA256
d534b9ddc3d83ce1be80d941cc18aada3353b06c300cf96707b2f8f13276f45c

SHA512
2236c5b93e03f11e14399e3cc335a5c53ac6a33ffcd1ae873c5be49390fb3d51fb1f44abdacaedfff5b07e745f607718fcc2ba84d34ef7e403abcda651758ddb

Download Submit
C:\Users\Admin\AppData\Local\Temp\907.tmp\batchfile.bat

Filesize
27B

MD5
a47e838e947071be3e212f4a857dcb49

SHA1
cfcbd49ca779dc2a30143eb4590b77b6e93be438

SHA256
763b9203b053cd451976129330d1f9fd8582337f021ceb153b54e3d2d9d220fc

SHA512
b1b121a5a70be58b5c96b809286e6578c3ee8b913b07be1d245289303b1f6fdda38768ea031eea7e908cf7d0504cfeff1663d9077d30e4b7cb64524f1cb1ca4c

Download Submit
\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe

Filesize
8KB

MD5
9cf7c23271c7db723f4c77bba4b8db1f

SHA1
ccb77be0006b9480e7473173098bf93fe4c6f3b9

SHA256
d534b9ddc3d83ce1be80d941cc18aada3353b06c300cf96707b2f8f13276f45c

SHA512
2236c5b93e03f11e14399e3cc335a5c53ac6a33ffcd1ae873c5be49390fb3d51fb1f44abdacaedfff5b07e745f607718fcc2ba84d34ef7e403abcda651758ddb

Download Submit
\Users\Admin\AppData\Local\Temp\81D.tmp\b2e.exe

Filesize
8KB

MD5
9cf7c23271c7db723f4c77bba4b8db1f

SHA1
ccb77be0006b9480e7473173098bf93fe4c6f3b9

SHA256
d534b9ddc3d83ce1be80d941cc18aada3353b06c300cf96707b2f8f13276f45c

SHA512
2236c5b93e03f11e14399e3cc335a5c53ac6a33ffcd1ae873c5be49390fb3d51fb1f44abdacaedfff5b07e745f607718fcc2ba84d34ef7e403abcda651758ddb

Download Submit
memory/364-64-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/692-54-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/692-63-0x0000000000570000-0x0000000000575000-memory.dmp

Filesize
20KB

Download
memory/692-62-0x0000000000570000-0x0000000000575000-memory.dmp

Filesize
20KB

Download
memory/692-65-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/692-55-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download

Analysis

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