bumblebee | 9086c173ad998545a39547935579ab6ee7a8db5e13d04643a8ca558fd67805dc

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2023 05:52

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General

Target

quotefile.ps1
Size

1.9MB
MD5

739eaf406607fa3efddb9c6c97cdba76
SHA1

bdb0575775a3447391b9d719e6d69c0e44549fd2
SHA256

d6cc3ac995484b99ed790b6f8ceb145492794eb5d01ec4a71123b9975e9bfd20
SHA512

80ccebc7f4ff3597031899973817acdb4c1638788aa37b536fcafb6cd03b2f6113d40527b2e7a7f49d4794f021c815f8dc85ac4fd372d40cde59da6db2769384
SSDEEP

24576:AzrIw+80AssR3D6UN6hzwbSVsi5MW94d5upIAMoIKAdqQb16:AwwahXsvWK1dj6

Score

10^/10

bumblebee 1508 evasion trojan

Malware Config

Extracted

Family

bumblebee

rc4.plain

Extracted

Family

bumblebee

Botnet

1508

172.93.201.138:443

116.142.140.251:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	powershell.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	powershell.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	powershell.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	powershell.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	powershell.exe

Blocklisted process makes network request 7 IoCs

flow	pid	Process
24	2472	powershell.exe
50	2472	powershell.exe
70	2472	powershell.exe
72	2472	powershell.exe
74	2472	powershell.exe
75	2472	powershell.exe
76	2472	powershell.exe

Checks BIOS information in registry 2 TTPs 3 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	powershell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	powershell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	powershell.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Wine	powershell.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2472	powershell.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2940	2472	powershell.exe	87
PID 2472 wrote to memory of 2940	2472	powershell.exe	87
PID 2940 wrote to memory of 408	2940	csc.exe	88
PID 2940 wrote to memory of 408	2940	csc.exe	88
PID 2472 wrote to memory of 3664	2472	powershell.exe	89
PID 2472 wrote to memory of 3664	2472	powershell.exe	89
PID 3664 wrote to memory of 3952	3664	csc.exe	90
PID 3664 wrote to memory of 3952	3664	csc.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\quotefile.ps1
1⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Blocklisted process makes network request
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtCreateThreadExHideFromDebugger
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\yccpyfx0\yccpyfx0.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES86A9.tmp" "c:\Users\Admin\AppData\Local\Temp\yccpyfx0\CSCB71E333A4AD74C9EA2CCBC21A438B34.TMP"
    3⤵
    PID:408
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\3zwqoftw\3zwqoftw.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3664
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESAD6B.tmp" "c:\Users\Admin\AppData\Local\Temp\3zwqoftw\CSC179C15A8DDF343559166677868BCFC7.TMP"
    3⤵
    PID:3952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3zwqoftw\3zwqoftw.dll

Filesize
3KB

MD5
9c81c313fadd8c7a2063f70df53f60a6

SHA1
9614441634d7275f0fcceb4dd312aa244a804dff

SHA256
61b8698967025619b96c7fc7599772ef37bf8d2c22d6450ea22cad6d46c60eab

SHA512
a9e114772ff71236aa0e5f0e7a2765239983c6fb9de5992e6645cd8b0b73469f2619955c95fc8c6efde8e2db377c9d5ca285de491ee4e83c4764b5f9d8fa259c

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES86A9.tmp

Filesize
1KB

MD5
8292a1b111ab2f1435a30f62557aa481

SHA1
80ba25c46a4ca008a837e033119e4f0dc8b2fe0d

SHA256
f2c50d8339e7b4b6382887b4012415c5fadd019c9958bcfd7e89bf3210064ced

SHA512
52f6f1bdd3016f1bb263eccd30c493cd9904805c33c045b0bb100607a611959e30204780f939f940521c4b0e7b288fb40b988c3beb4c8e6f8426813efa1a9538

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESAD6B.tmp

Filesize
1KB

MD5
8e1a947a2e97577ea9b614089ad54cc9

SHA1
248ca7c4ad4ecdccdb1c578569db2f277b66a74a

SHA256
c8aeb4fae33154f724d9364a9fcd7574d6ef808eb70d01342f28b25e9c1e4932

SHA512
a5b6ba2add16f5d682fa6968134ffa014edecfec7b18c678468772ed0fbc4325ee114a707b2785307ce97e424b993996b8b46cdb532876fa9d0b813f6350c6c2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mqw1lmmt.cvu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\yccpyfx0\yccpyfx0.dll

Filesize
3KB

MD5
adfe1a63b02d4a6a254166d73b6d6ebb

SHA1
324d9bd804f4e29662ef145fe55e177bd842020f

SHA256
8ed5f2c4db419011653da9cc3f72f0f3a4f7c0d46dcd85cc594dff6f56694d04

SHA512
ddb1cfac2fa5ebec43c7e8ffa9624db39c7e1606c1c8dad175a2e0b15efcb03591c9615441d060145376702c3a4fb6c38bfb465b4ddd5e2042a31ddc13bc82b2

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\3zwqoftw\3zwqoftw.0.cs

Filesize
591B

MD5
9b5ca5987d03f2fda2d89b3225bb527b

SHA1
2fca70ccb8428eda41cb29785458155942e24da3

SHA256
e47533d0cbe442ac6b5bd50e507c9dae2c9f19ee4c0ffbc2273375f0721efaa8

SHA512
8e2c4ae7b952998cb6efaeaee6f274efb879f3c1bf657d83391ddf7ea291b4927204e5c2d67877b820a35a67d39dfe857b9f4725085062cae75bc871d657a7bf

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\3zwqoftw\3zwqoftw.cmdline

Filesize
369B

MD5
714f940388a38500c2e6a60ade20e60f

SHA1
ca596cfdf37d7422e50f8304a5886af3694b8dcc

SHA256
9109e241ae952851b226836b57af0f414c705b58466495601df80803ba84ca3e

SHA512
3add48abd49a63a9985b1a56a50d921becdc3356d4e376a0a3cb719a1cf04865fcd662da7c964c5f7dc01500391494a6eb04252efd9d9fd027f756311e01f9d8

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\3zwqoftw\CSC179C15A8DDF343559166677868BCFC7.TMP

Filesize
652B

MD5
cfef5c659ad26ce8ae0402577195902f

SHA1
6aab0017c6a69b47f1adbbed809970ec36f75d4f

SHA256
a00e1782e828b23a719f9a6fe8d8dccce1d60daa8232f29a0d62084b5fa691f5

SHA512
90e1518807cca9d6da9f3b217cdbba6bf6227d6f3f94a71313abd29fd7866795c8cc369c601c1c7f6a8c351f7c5d2ba2a5cf32c4a7e4cceb618cea81dee7b98a

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\yccpyfx0\CSCB71E333A4AD74C9EA2CCBC21A438B34.TMP

Filesize
652B

MD5
80d3624f5be1889b58bfe4ffc5093bd0

SHA1
c13cdf5aecdcbfb43008458e82d0eda3bf9e765c

SHA256
dbfd0dcd979a52065581e5d333ca97596de5dad9605d8dffb4a7aaa92c7a70e4

SHA512
5baa36be72d87dbd7226aeacb9ed38f6a9755fdd4751b5d8da5e529d2efce26c0e53edf452e88e3b233751de75098f33826d64b9db20bb1b4c9b8b2a87d94fd2

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\yccpyfx0\yccpyfx0.0.cs

Filesize
203B

MD5
b611be9282deb44eed731f72bcbb2b82

SHA1
cc1d606d853bbabd5fef87255356a0d54381c289

SHA256
ee09fdd61a05266e4e09f418fc6a452f1205d9f29afba6b8a1579333dc3ff3b6

SHA512
63b5ad7b65fd4866fb8841e4eee567e4f1e7888bb9fda8dd5c8dca3461d084d3f80ce920ae321609e4ff32ba13a55b7320282ce7201bb74a793d4700240360a4

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\yccpyfx0\yccpyfx0.cmdline

Filesize
369B

MD5
6d7c7bd5836e932d62efcb87aff20805

SHA1
2d119001de7460d0eaa10bfdebf793fe89f5335d

SHA256
2b0014b269a8e5b987a8ed6ee47f163adca1e61fa6e66baec42af1f66c1bdb73

SHA512
24f1e0683cc780042b84b919a42c09815d80bede1d90aabe10a90d8d74b9454915e20a337857b6a0678c5b9c5e7a9f97a563e16bdd7a65603a622289a9d2bb29

Download Submit
memory/2472-180-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-182-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-159-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-144-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-143-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-133-0x0000027EC19D0000-0x0000027EC19F2000-memory.dmp

Filesize
136KB

Download
memory/2472-174-0x0000027ED1ED0000-0x0000027ED1FE6000-memory.dmp

Filesize
1.1MB

Download
memory/2472-158-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-181-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-160-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-183-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-184-0x00007FFD3D870000-0x00007FFD3D871000-memory.dmp

Filesize
4KB

Download
memory/2472-188-0x0000027EA68D0000-0x0000027EA68E0000-memory.dmp

Filesize
64KB

Download
memory/2472-192-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-200-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-208-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-210-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download
memory/2472-234-0x0000027ED1FF0000-0x0000027ED2105000-memory.dmp

Filesize
1.1MB

Download