de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d

General

Target

de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe
Size

53KB
MD5

e8189ad6682644db5c43b760c4e7cf14
SHA1

d39ac6b75605b82a09211b4d9734563d423be3d3
SHA256

de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d
SHA512

85a4f4dfea22b210f7cc1cad7ce338ee82bb130326e6489d3d0b840d17c141d76d4ce7d380aa09276cf239d4d9cde09d58a2fb7ebb2c27728d0cfdd7fb5d7fb7
SSDEEP

768:wV/Pp4hAJdmJ1z+W04MzkTkEg3E1ysh3e5tHuRRFxcoA9To6:wV/AAJdi1zEPoTS3E1yshODHu4oAH

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1716	weyjba.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000500000000b2d2-57.dat	upx
behavioral1/files/0x000500000000b2d2-59.dat	upx
behavioral1/files/0x000500000000b2d2-64.dat	upx

Loads dropped DLL 1 IoCs

pid	Process
1128	de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 4 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	weyjba.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 0400000001000000100000000cd2f9e0da1773e9ed864da5e370e74e14000000010000001400000079b459e67bb6e5e40173800888c81a58f6e99b6e030000000100000014000000cabd2a79a1076a31f21d253635cb039d4329a5e80f00000001000000200000003f0411ede9c4477057d57e57883b1f205b20cdc0f3263129b1ee0269a2678f631900000001000000100000002fe1f70bb05d7c92335bc5e05b984da620000000010000006f0500003082056b30820353a0030201020211008210cfb0d240e3594463e0bb63828b00300d06092a864886f70d01010b0500304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f74205831301e170d3135303630343131303433385a170d3335303630343131303433385a304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f7420583130820222300d06092a864886f70d01010105000382020f003082020a0282020100ade82473f41437f39b9e2b57281c87bedcb7df38908c6e3ce657a078f775c2a2fef56a6ef6004f28dbde68866c4493b6b163fd14126bbf1fd2ea319b217ed1333cba48f5dd79dfb3b8ff12f1219a4bc18a8671694a66666c8f7e3c70bfad292206f3e4c0e680aee24b8fb7997e94039fd347977c99482353e838ae4f0a6f832ed149578c8074b6da2fd0388d7b0370211b75f2303cfa8faeddda63abeb164fc28e114b7ecf0be8ffb5772ef4b27b4ae04c12250c708d0329a0e15324ec13d9ee19bf10b34a8c3f89a36151deac870794f46371ec2ee26f5b9881e1895c34796c76ef3b906279e6dba49a2f26c5d010e10eded9108e16fbb7f7a8f7c7e50207988f360895e7e237960d36759efb0e72b11d9bbc03f94905d881dd05b42ad641e9ac0176950a0fd8dfd5bd121f352f28176cd298c1a80964776e4737baceac595e689d7f72d689c50641293e593edd26f524c911a75aa34c401f46a199b5a73a516e863b9e7d72a712057859ed3e5178150b038f8dd02f05b23e7b4a1c4b730512fcc6eae050137c439374b3ca74e78e1f0108d030d45b7136b407bac130305c48b7823b98a67d608aa2a32982ccbabd83041ba2830341a1d605f11bc2b6f0a87c863b46a8482a88dc769a76bf1f6aa53d198feb38f364dec82b0d0a28fff7dbe21542d422d0275de179fe18e77088ad4ee6d98b3ac6dd27516effbc64f533434f0203010001a3423040300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e0416041479b459e67bb6e5e40173800888c81a58f6e99b6e300d06092a864886f70d01010b05000382020100551f58a9bcb2a850d00cb1d81a6920272908ac61755c8a6ef882e5692fd5f6564bb9b8731059d321977ee74c71fbb2d260ad39a80bea17215685f1500e59ebcee059e9bac915ef869d8f8480f6e4e99190dc179b621b45f06695d27c6fc2ea3bef1fcfcbd6ae27f1a9b0c8aefd7d7e9afa2204ebffd97fea912b22b1170e8ff28a345b58d8fc01c954b9b826cc8a8833894c2d843c82dfee965705ba2cbbf7c4b7c74e3b82be31c822737392d1c280a43939103323824c3c9f86b255981dbe29868c229b9ee26b3b573a82704ddc09c789cb0a074d6ce85d8ec9efceabc7bbb52b4e45d64ad026cce572ca086aa595e315a1f7a4edc92c5fa5fbffac28022ebed77bbbe3717b9016d3075e46537c3707428cd3c4969cd599b52ae0951a8048ae4c3907cecc47a452952bbab8fbadd233537de51d4d6dd5a1b1c7426fe64027355ca328b7078de78d3390e7239ffb509c796c46d5b415b3966e7e9b0c963ab8522d3fd65be1fb08c284fe24a8a389daac6ae1182ab1a843615bd31fdc3b8d76f22de88d75df17336c3d53fb7bcb415fffdca2d06138e196b8ac5d8b37d775d533c09911ae9d41c1727584be0241425f67244894d19b27be073fb9b84f817451e17ab7ed9d23e2bee0d52804133c31039edd7a6c8fc60718c67fde478e3f289e0406cfa5543477bdec899be91743df5bdb5ffe8e1e57a2cd409d7e6222dade1827	weyjba.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\SystemCertificates\CA\Certificates\151682F5218C0A511C28F4060A73B9CA78CE9A53	weyjba.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\SystemCertificates\CA\Certificates\151682F5218C0A511C28F4060A73B9CA78CE9A53\Blob = 030000000100000014000000151682f5218c0a511c28f4060a73b9ca78ce9a531400000001000000140000007c4296aede4b483bfa92f89e8ccf6d8ba972379504000000010000001000000029f1c1b26d92e893b6e6852ab708cce10f00000001000000200000005aef843ffcf2ec7055f504a162f229f8391c370ff3a6163d2db3f3d604d622be19000000010000001000000070d4f0bec2078234214bd651643b02401800000001000000100000002fe1f70bb05d7c92335bc5e05b984da62000000001000000640400003082046030820248a0030201020210079e492886376fd40848c23fc631e463300d06092a864886f70d01010b0500304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f74205831301e170d3230303930343030303030305a170d3235303931353136303030305a304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f742058323076301006072a8648ce3d020106052b8104002203620004cd9bd59f80830aec094af3164a3e5ccf77acde67050d1d07b6dc16fb5a8b14dbe27160c4ba459511898eea06dff72a161ca4b9c5c532e003e01e8218388bd745d80a6a6ee60077fb02517d22d80a6e9a5b77dff0fa41ec39dc75ca68070c1feaa381e53081e2300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e041604147c4296aede4b483bfa92f89e8ccf6d8ba9723795301f0603551d2304183016801479b459e67bb6e5e40173800888c81a58f6e99b6e303206082b0601050507010104263024302206082b060105050730028616687474703a2f2f78312e692e6c656e63722e6f72672f30270603551d1f0420301e301ca01aa0188616687474703a2f2f78312e632e6c656e63722e6f72672f30220603551d20041b30193008060667810c010201300d060b2b0601040182df13010101300d06092a864886f70d01010b050003820201001b7f252b907a0876007718e1c32e8a364c417ebf174be330d75b0c7e9c96986f7bb068c02444cce2f2fcd1eadbd29f01f9174d0c9d55fda5ad6dd22f3f4b72c02eae73c7251657c23e15ade031d10a84846c6278423122461aed7a40bf9716814477ca6c7b5d215c07f2119121bfe12fc2ef6efd0520e4b4f779f32dbb372af0c6b1acac51f51fb35a1e66ce580718387f71a93c83bad7bc829e9a760f9eb029fdcbf38907481bfeab932e14210d5faf8eb754ab5d0ed45b4c71d092ea3da3369b7c1fe03b55b9d85353cc8366bb4adc810600188bf4b3d748b11341b9c4b69ecf2c778e42200b807e9fc5ab48dbbc6f048d6c4629020d708a1df11273b64624429e2a1718e3acc798c272cc6d2d766ddd2c2b2696a5cf21081be5da2fcbef9f7393aef8365f478f9728ceabe29826988bfdee28322229ed4c9509c420fa07e1862c44f68147c0e46232ed1dd83c488896c35e91b6af7b59a4eee3869cc78858ca282a66559b8580b91dd8402bc91c133ca9ebde99c21640f6f5a4ae2a256c52bac7044cb432bbfc385ca00c617b57ec774e50cfaf06a20f378ce10ed2d32f1abd9c713ecce1f8d1a8a3bd04f619c0f986aff50e1aaa956befca47714b631c4d96db55230a9d0f8175a0e640f56446036ecefa6a7d06eca4340674da53d8b9b8c6237da9f82a2da482a62e2d11cae6cd31587985e6721ca79fd34cd066d0a7bb	weyjba.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1128	de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe
1716	weyjba.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 1716	1128	de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe	27
PID 1128 wrote to memory of 1716	1128	de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe	27
PID 1128 wrote to memory of 1716	1128	de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe	27
PID 1128 wrote to memory of 1716	1128	de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe	27

C:\Users\Admin\AppData\Local\Temp\de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe
"C:\Users\Admin\AppData\Local\Temp\de9d871da2ae7c673be8b2c678df1393b636a5687f1325a5043eea27aad2d58d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Users\Admin\AppData\Local\Temp\weyjba.exe
  "C:\Users\Admin\AppData\Local\Temp\weyjba.exe"
  2⤵
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of UnmapMainImage
  PID:1716

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

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\weyjba.exe

Filesize
53KB

MD5
444da60233eba6afb8e2f7160f6efb2c

SHA1
028365ecf0e1bb026ed799f37c5c4613b9d6cfe1

SHA256
a0f6b72cfa1e58f7178e81de4612e25d5c088491b3fa09854911bf04cbd3f70c

SHA512
22cdd978df44b801753f54e48198b908980d791f915d5f749f9180fc7709b7d0eac463a3c680dbde5d33a6cddc0444a725d3a9a0d575f379c8196ad125639720

Download Submit
C:\Users\Admin\AppData\Local\Temp\weyjba.exe

Filesize
53KB

MD5
444da60233eba6afb8e2f7160f6efb2c

SHA1
028365ecf0e1bb026ed799f37c5c4613b9d6cfe1

SHA256
a0f6b72cfa1e58f7178e81de4612e25d5c088491b3fa09854911bf04cbd3f70c

SHA512
22cdd978df44b801753f54e48198b908980d791f915d5f749f9180fc7709b7d0eac463a3c680dbde5d33a6cddc0444a725d3a9a0d575f379c8196ad125639720

Download Submit
\Users\Admin\AppData\Local\Temp\weyjba.exe

Filesize
53KB

MD5
444da60233eba6afb8e2f7160f6efb2c

SHA1
028365ecf0e1bb026ed799f37c5c4613b9d6cfe1

SHA256
a0f6b72cfa1e58f7178e81de4612e25d5c088491b3fa09854911bf04cbd3f70c

SHA512
22cdd978df44b801753f54e48198b908980d791f915d5f749f9180fc7709b7d0eac463a3c680dbde5d33a6cddc0444a725d3a9a0d575f379c8196ad125639720

Download Submit
memory/1128-54-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1128-55-0x0000000076961000-0x0000000076963000-memory.dmp

Filesize
8KB

Download
memory/1128-56-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1128-60-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1716-65-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1716-66-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

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