b30dfb8608adf0c39754145ed1e8e8cf391ef1a5cafeb207bdb53dbfe80a4a08

Analysis

max time kernel
28s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
24-03-2023 20:34

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General

Target

NeptnExternalFree.exe
Size

3.4MB
MD5

bbedbbb87552cceb179e196588684cbc
SHA1

d1b7d2834140f503d7a7b92df30fadece473c29c
SHA256

b30dfb8608adf0c39754145ed1e8e8cf391ef1a5cafeb207bdb53dbfe80a4a08
SHA512

1e65d28aad644fc791a01eb55d3dc53d6f5c63c5fb5c9e52c96c384b5109499364a0ca433e09383972419b02e53662f15f9d238c4313aeb6842a4057be9429f3
SSDEEP

98304:i1NGlQS2DA5FlCPfvJj2wmfXWjY9sz985D:i1N+QXAHlohyP/WsA98B

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

NeptnExternalFree.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ NeptnExternalFree.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	NeptnExternalFree.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

NeptnExternalFree.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	NeptnExternalFree.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	NeptnExternalFree.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2028-54-0x000000013F480000-0x000000013FD99000-memory.dmp	themida
behavioral1/memory/2028-55-0x000000013F480000-0x000000013FD99000-memory.dmp	themida
behavioral1/memory/2028-56-0x000000013F480000-0x000000013FD99000-memory.dmp	themida
behavioral1/memory/2028-57-0x000000013F480000-0x000000013FD99000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

NeptnExternalFree.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA NeptnExternalFree.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

NeptnExternalFree.exe

pid process

2028 NeptnExternalFree.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1824 2028 WerFault.exe NeptnExternalFree.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	NeptnExternalFree.exe

pid	process
2028	NeptnExternalFree.exe

pid	pid_target	process	target process
1824	2028	WerFault.exe	NeptnExternalFree.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\DOMStorage\discord.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "2"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\DOMStorage\discord.com	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{C2D6D731-CA8B-11ED-9D2F-CED2106B5FC8} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\SearchScopes	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1932 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1932 iexplore.exe
1932 iexplore.exe
572 IEXPLORE.EXE
572 IEXPLORE.EXE
572 IEXPLORE.EXE
572 IEXPLORE.EXE

pid	process
1932	iexplore.exe

pid	process
1932	iexplore.exe
1932	iexplore.exe
572	IEXPLORE.EXE
572	IEXPLORE.EXE
572	IEXPLORE.EXE
572	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

NeptnExternalFree.execmd.exeiexplore.exe

description	pid	process	target process
PID 2028 wrote to memory of 1824	2028	NeptnExternalFree.exe	WerFault.exe
PID 2028 wrote to memory of 1824	2028	NeptnExternalFree.exe	WerFault.exe
PID 2028 wrote to memory of 1824	2028	NeptnExternalFree.exe	WerFault.exe
PID 2028 wrote to memory of 1800	2028	NeptnExternalFree.exe	cmd.exe
PID 2028 wrote to memory of 1800	2028	NeptnExternalFree.exe	cmd.exe
PID 2028 wrote to memory of 1800	2028	NeptnExternalFree.exe	cmd.exe
PID 1800 wrote to memory of 1932	1800	cmd.exe	iexplore.exe
PID 1800 wrote to memory of 1932	1800	cmd.exe	iexplore.exe
PID 1800 wrote to memory of 1932	1800	cmd.exe	iexplore.exe
PID 1932 wrote to memory of 572	1932	iexplore.exe	IEXPLORE.EXE
PID 1932 wrote to memory of 572	1932	iexplore.exe	IEXPLORE.EXE
PID 1932 wrote to memory of 572	1932	iexplore.exe	IEXPLORE.EXE
PID 1932 wrote to memory of 572	1932	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\NeptnExternalFree.exe
"C:\Users\Admin\AppData\Local\Temp\NeptnExternalFree.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c start https://discord.gg/xCRS6yyPF6
2⤵
- Suspicious use of WriteProcessMemory
PID:1800

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://discord.gg/xCRS6yyPF6
3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1932 CREDAT:275457 /prefetch:2
4⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:572

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2028 -s 132
2⤵
- Program crash
PID:1824

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
61KB

MD5
e71c8443ae0bc2e282c73faead0a6dd3

SHA1
0c110c1b01e68edfacaeae64781a37b1995fa94b

SHA256
95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

SHA512
b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
342B

MD5
9d6d3883cad28b1016d06bbaf6ff33eb

SHA1
dd9292702fdd363bff926d058691be485ebbd243

SHA256
7757beb205d3767647b41135522c49bc7bd4b9266bcdf8d7b19c48aac476764b

SHA512
5d989da4798fe4db8ee67f1dd6d80d1ea10c9fcdc21f5bfe874fec492cf770caead0d23cb992ed35366ad071122bd372b90c4d8d58adaa7c311eac2391076214

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
07718bff190253f7b60cbecf4357c12d

SHA1
52115e28c5fbc0f061f6d61ca307f38511b054e6

SHA256
a5fa7627997c52bb52e74db1a64a6398688e24771b423165964362c1cb39ec85

SHA512
0581b0507e02fa54d84a645f94ef8ff9089eba1c880fc4e2811e6d3b8e05bb5584c1f357b0a37460efabae9ff5b581d3686b74e3a913bf62158f5b875d26cd55

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
f7db0a97d28035a54043d34fb2a54cdd

SHA1
18ee0bb56453915a7766472f59836e9548a186e7

SHA256
5081226a5c52bc07c66b0b9fb38cd51be258191e96e4cd5c90f90e6f204dbd10

SHA512
176083401e344b484059ab25c0712263f6cc681622db5ea5fccd3b3663f49147cb12a1dabd687ff787529f5815ce2996da5911d62de1731ae83a564e161a76c4

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
dae42e881062180b7b307995f6d7a8c2

SHA1
35fa86c3bb93b7cf026538e737659fef5b4f59bf

SHA256
c88bb008bcd9f134e9f7c0f85fdea3b7a95b1f47638f9db01ef6c893fc3e1bca

SHA512
8a526765935d89d4720b90b1153fbcc9a0a23b3ebc50f75dad021fa893102417a2a21c26781d2489942ae1a9304d4373d649a608d7fffbca2115864ecca2156c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
36deb7bc4badd19959738ab2d562cc75

SHA1
1829ad7639be8f8d87865f463928d2d81ed4a148

SHA256
23f0e234f0cb46900efc15e9630eabd7881e2a279f3d129a94b7bc3fd827b696

SHA512
1101aac7aac76f2c2db2c6afaf0f01d1c99efcf9fce5f21acc2b2df4968ad4b66c63eaa3604478855c2e7ddd6505798e273d270c85f336bad14f8c4b75fe263f

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
174a5a11d9e04acbbf169e1de0f85b33

SHA1
eeba2efcac859e642c7a035c45deeb5c3caa20e6

SHA256
ec274d7beb4f09669ff7ecaa1b8044f03e57a20738e1fa17c21ad8d613457d44

SHA512
ef7ca6e7531dca76425a8a9b17cc3716b98a2768666939c1091fa4756ec26efd03b27ec8aff518071de583d723da14431fe96485fdcad5193f922eea1039f264

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
d9dd8bd4bffa87e13ea34af94c880559

SHA1
4b39c71e5e69b60fde8565e2cca1a1b5b72af96c

SHA256
d25af4076138ef9c32d0e7c2f09f6affc283e9b0999fafb1fa3d6a2617afa151

SHA512
992c1dda5005ab8f1f91f800d555469d88cbe1a3870562a0e38c19de566450b893f7b7109f1186550db534ec9586a8e39c1f71ddc2e7919cc6b6e9793d7f46e5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
7a82b4ff40d73b635fae36f94f3af9fc

SHA1
3bd70a37e16e59916069faf20121e3a66e9c578b

SHA256
6faf7d24f46bdd4b83d9e2a0ed4ad97915f51b5284efc10728472a6e3a402692

SHA512
fc6f48a81ae9af0a96cc300c2ebc66782645d81ae76a0c24aed2bdb7995ea69c78bd2e7612d75756475efa2dee72f6b1a99e979d870557f8a3ff8dc5e340688f

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
304B

MD5
36dd399d2cbafd782b5567a9ee4c9724

SHA1
db4f24c4b2d6780c0cb2e9a6405d40e2a75ef52f

SHA256
84fb119132e7bf392ff313ea0ff1f01db841009a83dba128b270f18a528638ef

SHA512
06985f96b20349f94c5cbac0544c68fd4587c854b6a5f98c3cff974e2fd87cebd35b9cfd5fc85698840578b9c1005e73a4c606f4f790d5a1fff6583f67a83f67

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\p734dsx\imagestore.dat
Filesize
28KB

MD5
4f1d17b54f5f76e6381677afe53111e4

SHA1
9cab697436bdbffede5408885eb4bcf13e7693e2

SHA256
66be396d47dd65262d2d4511d20d28d50ec1fe848d52d796327391b65a360601

SHA512
e166dc48ff355a37ef9fff75f99f1af39bf691a4ab88ec430ae339b11836a5edaac202a69f76c6bca74c656bd6afb2223aa93f307ae00a1ab401553f2e800b41

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\NZTPJYNO\ec2c34cadd4b5f4594415127380a85e6[1].ico
Filesize
23KB

MD5
ec2c34cadd4b5f4594415127380a85e6

SHA1
e7e129270da0153510ef04a148d08702b980b679

SHA256
128e20b3b15c65dd470cb9d0dc8fe10e2ff9f72fac99ee621b01a391ef6b81c7

SHA512
c1997779ff5d0f74a7fbb359606dab83439c143fbdb52025495bdc3a7cb87188085eaf12cc434cbf63b3f8da5417c8a03f2e64f751c0a63508e4412ea4e7425c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab73EC.tmp
Filesize
61KB

MD5
fc4666cbca561e864e7fdf883a9e6661

SHA1
2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

SHA256
10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

SHA512
c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar73ED.tmp
Filesize
161KB

MD5
73b4b714b42fc9a6aaefd0ae59adb009

SHA1
efdaffd5b0ad21913d22001d91bf6c19ecb4ac41

SHA256
c0cf8cc04c34b5b80a2d86ad0eafb2dd71436f070c86b0321fba0201879625fd

SHA512
73af3c51b15f89237552b1718bef21fd80788fa416bab2cb2e7fb3a60d56249a716eda0d2dd68ab643752272640e7eaaaf57ce64bcb38373ddc3d035fb8d57cd

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar752B.tmp
Filesize
161KB

MD5
be2bec6e8c5653136d3e72fe53c98aa3

SHA1
a8182d6db17c14671c3d5766c72e58d87c0810de

SHA256
1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

SHA512
0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

Download Submit
memory/2028-57-0x000000013F480000-0x000000013FD99000-memory.dmp

Filesize
9.1MB

Download
memory/2028-54-0x000000013F480000-0x000000013FD99000-memory.dmp

Filesize
9.1MB

Download
memory/2028-55-0x000000013F480000-0x000000013FD99000-memory.dmp

Filesize
9.1MB

Download
memory/2028-56-0x000000013F480000-0x000000013FD99000-memory.dmp

Filesize
9.1MB

Download
memory/2028-68-0x0000000001B30000-0x0000000001B31000-memory.dmp

Filesize
4KB

Download