hxxps://carefree-sacmon[.]s3[.]us-west-2[.]amazonaws[.]com/jre[.]zip

Analysis

max time kernel
112s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 09:06

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General

Target

https://carefree-sacmon.s3.us-west-2.amazonaws.com/jre.zip

Score

1^/10

Malware Config

Signatures

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000_Classes\Local Settings	msedge.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4200	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1840	msedge.exe
1840	msedge.exe
396	msedge.exe
396	msedge.exe
1444	identity_helper.exe
1444	identity_helper.exe
4604	msedge.exe
4604	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe

Suspicious use of FindShellTrayWindow 64 IoCs

pid	Process
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe
396	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 1296	396	msedge.exe	19
PID 396 wrote to memory of 1296	396	msedge.exe	19
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 4784	396	msedge.exe	88
PID 396 wrote to memory of 1840	396	msedge.exe	89
PID 396 wrote to memory of 1840	396	msedge.exe	89
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90
PID 396 wrote to memory of 4872	396	msedge.exe	90

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://carefree-sacmon.s3.us-west-2.amazonaws.com/jre.zip
1⤵
- Enumerates system info in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:396
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffa0a0346f8,0x7ffa0a034708,0x7ffa0a034718
  2⤵
  PID:1296
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2124 /prefetch:2
  2⤵
  PID:4784
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2192 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1840
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2908 /prefetch:8
  2⤵
  PID:4872
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3380 /prefetch:1
  2⤵
  PID:3644
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3364 /prefetch:1
  2⤵
  PID:692
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5356 /prefetch:8
  2⤵
  PID:1916
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5356 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1444
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5440 /prefetch:1
  2⤵
  PID:4968
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5400 /prefetch:1
  2⤵
  PID:3636
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=3484 /prefetch:8
  2⤵
  PID:4472
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5724 /prefetch:1
  2⤵
  PID:4932
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6104 /prefetch:1
  2⤵
  PID:3176
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6088 /prefetch:1
  2⤵
  PID:1744
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=2096,13386023600098220459,5222346741645246617,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1300 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4604

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4672

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1324

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4508

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Temp1_jre.zip\jre\jre1.8.0_341\README.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:4200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
7740a919423ddc469647f8fdd981324d

SHA1
c1bc3f834507e4940a0b7594e34c4b83bbea7cda

SHA256
bdd4adaa418d40558ab033ac0005fd6c2312d5f1f7fdf8b0e186fe1d65d78221

SHA512
7ad98d5d089808d9a707d577e76e809a223d3007778a672734d0a607c2c3ac5f93bc72adb6e6c7f878a577d3a1e69a16d0cd871eb6f58b8d88e2ea25f77d87b7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
9f44d6f922f830d04d7463189045a5a3

SHA1
2e9ae7188ab8f88078e83ba7f42a11a2c421cb1c

SHA256
0ae5cf8b49bc34fafe9f86734c8121b631bad52a1424c1dd2caa05781032334a

SHA512
7c1825eaefcc7b97bae31eeff031899300b175222de14000283e296e9b44680c8b3885a4ed5d78fd8dfee93333cd7289347b95a62bf11f751c4ca47772cf987d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
28e2cd828d803d1573acbe3d66e7fc41

SHA1
bf87e997a9950c243e8943f9cd2cc07629edad63

SHA256
1aed0afbf1604572dddc045a39d89e800008d508c9ea5baf0f22fbf58baddbe7

SHA512
5e1b82887a57a2ea4cff7daf8d04567325f3aa1ea658b6b35c9bcf7199903c87753ab2b224b66feba111abf26e7182695f241d5ffaf4b33fdd6920e4cfcdac75

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
318bbf385f03180314bcbde9e2a81970

SHA1
e9deac0cbca8310d2c531e130243dfce3806d9d6

SHA256
26a667a4b6ef8885d3b93b25b12c33a4a1672be79c99d7ec0084f7a0d8e7fc4a

SHA512
91953e469682eb44a81b27b6833e83d433cc2c8dc5175ef1a44ca2371edaa39323c906a6abf2e4663ebe85ea8db8bfd08f1f3268c1f121fe46e08e7ff87195e7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
6752a1d65b201c13b62ea44016eb221f

SHA1
58ecf154d01a62233ed7fb494ace3c3d4ffce08b

SHA256
0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

SHA512
9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
11KB

MD5
a44d5366e834c000b1c9eb439e3b96ba

SHA1
cfbe322dff662158eded6dd98c42d328b4fe4b2c

SHA256
05492fde25cc77ffc3873495d19a404cf42af1b4249bb489409630f0826a236b

SHA512
d42687a9648a2d45b0c7f02eb8fb4a88a3fa3be90bc9f21193aad70754a058d8856dca0d8957227be928c5e0017723417af6847f1f6c1654c994ac24681a0fa2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
12KB

MD5
b4aa930fceec5c39f3e08340d1444455

SHA1
24e9033fda84638b81d7a79d9e17d9245f7542d5

SHA256
3208fa3fe5f7f36cbefc3c4eccf90c61e93752af54a380df253e65c699c1676a

SHA512
9fbfcbc2ac48f7c36259247e852678272b3ed521191b660f8001511258c1a7fb70686406244a08d3bc4bdafe876bcb46a9e2ef7c8dbd99b4bfcec7f753d6bb6a

Download Submit
C:\Users\Admin\Downloads\jre.zip

Filesize
30.1MB

MD5
d7eece7763a3a73ac50af5d23784f078

SHA1
1c7539fd68f9cc9966f71247f28a1f89e24e94e9

SHA256
4d853e336b51370265c7d9a8885b1bf049f5b3786c717107bfb8f8e7eb8faded

SHA512
cedc03e85c35b5b6b58b022fdcadb636100e201b2920d19f2115bed7bce003e61f2a687368f3e91ffc9ac2790ab61250aeba66ba50cbca9b31576971e03a3689

Download Submit