5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83

Analysis

max time kernel
150s
max time network
137s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 01:25

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General

Target

5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe
Size

54.0MB
MD5

8583a7539b74e8223d479f70c6b2de51
SHA1

b0c2427c0899c20b725b85dff1126a696c372857
SHA256

5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83
SHA512

2434db81b7356e1ded0b86d80b29fd87449225283f5d59313bb875107548b46d1c2513a92a0392cae0ec5aef01a135fd9c91fe7863df0634b0858bf85f7100dc
SSDEEP

98304:xDr5t+zSg6zFhQdQBFgtD75qFb0I+0PqkW:xvzTvQdQsD7sbS

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2432	TASLogin.exe
268	TASLogin.exe

Loads dropped DLL 1 IoCs

pid	Process
2432	TASLogin.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\IFfmsjhgsda = "C:\\Users\\Public\\Documents\\M2M2L5\\TASLogin.exe"	TASLogin.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 268	2432	TASLogin.exe	35

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 39 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0 = 5000310000000000c1582d0b100052425242524100003a0008000400efbec1582d0bc1582d0b2a0000003b920100000005000000000000000000000000000000520042005200420052004100000016000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\hwp_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\hwp_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.hwp	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 7400310000000000c1582d0b11004d7573696300600008000400efbeee3a851ac1582d0b2a000000820200000000010000000000000000003600000000004d007500730069006300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380030003300000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\hwp_auto_file\shell\Read	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Music"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\hwp_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 7400310000000000a858f0711100557365727300600008000400efbeee3a851aa858f0712a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 7800310000000000c1582d0b11005075626c69630000620008000400efbeee3a851ac1582d0b2a0000007c0200000000010000000000000000003800000000005000750062006c0069006300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003600000016000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\hwp_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.hwp\ = "hwp_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\hwp_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\NodeSlot = "1"	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
820	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	268	TASLogin.exe
Token: SeShutdownPrivilege	268	TASLogin.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe
2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe
820	AcroRd32.exe
820	AcroRd32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 1208	2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe	28
PID 2980 wrote to memory of 1208	2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe	28
PID 2980 wrote to memory of 1208	2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe	28
PID 2980 wrote to memory of 1208	2980	5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe	28
PID 2172 wrote to memory of 2208	2172	explorer.exe	32
PID 2172 wrote to memory of 2208	2172	explorer.exe	32
PID 2172 wrote to memory of 2208	2172	explorer.exe	32
PID 2208 wrote to memory of 820	2208	rundll32.exe	33
PID 2208 wrote to memory of 820	2208	rundll32.exe	33
PID 2208 wrote to memory of 820	2208	rundll32.exe	33
PID 2208 wrote to memory of 820	2208	rundll32.exe	33
PID 2172 wrote to memory of 2432	2172	explorer.exe	34
PID 2172 wrote to memory of 2432	2172	explorer.exe	34
PID 2172 wrote to memory of 2432	2172	explorer.exe	34
PID 2172 wrote to memory of 2432	2172	explorer.exe	34
PID 2432 wrote to memory of 268	2432	TASLogin.exe	35
PID 2432 wrote to memory of 268	2432	TASLogin.exe	35
PID 2432 wrote to memory of 268	2432	TASLogin.exe	35
PID 2432 wrote to memory of 268	2432	TASLogin.exe	35
PID 2432 wrote to memory of 268	2432	TASLogin.exe	35
PID 2432 wrote to memory of 268	2432	TASLogin.exe	35

C:\Users\Admin\AppData\Local\Temp\5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe
"C:\Users\Admin\AppData\Local\Temp\5178fc4896049fc29c0c1d6cca080705263debcaf47077829f0d8c882959de83.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Windows\explorer.exe
  C:\Windows\explorer.exe C:\Users\Public\Music\RBRBRA
  2⤵
  PID:1208

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Public\Documents\M2M2L5\lee_yeon_woo.hwp
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2208
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Public\Documents\M2M2L5\lee_yeon_woo.hwp"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:820
- C:\Users\Public\Documents\M2M2L5\TASLogin.exe
  "C:\Users\Public\Documents\M2M2L5\TASLogin.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Users\Public\Documents\M2M2L5\TASLogin.exe
    C:\Users\Public\Documents\M2M2L5\TASLogin.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:268

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
f3ed3b68070c5211b794e743c946c8e9

SHA1
b11697ae040ace0081f8666a5c97317c0ec04b80

SHA256
93b304ba1a4228a8a5fa43f551f6cd53cfea85bb2cd4d8d7261f918539a21304

SHA512
44fdc80e238c5e1dd614cc5c7a99e5ee59cae94328eaba7cc70091b24792cfb8f9d927f0e98ea8ca6cb91b821117ccc2d95039a62980689deff2524a3f646bf0

Download Submit
C:\Users\Public\Documents\M2M2L5\TASLogin.exe

Filesize
567KB

MD5
e6a3caccbd9ca82f38a14bd0d4428240

SHA1
63937051b04582255505261d512a80ab40513b5f

SHA256
ca1f26619b4483f4bda6b4d352b58a9c4f30c2e985e62e761b7d6f3440922264

SHA512
21fbc87528dbc6b0f4aee165d9b812595ad1d30af434c401f4bc86d8bd6a209da950523cf00e7ae5fb1676350cd299d96e0e7a0255e6ebf53aeb7e51dd5d133e

Download Submit
C:\Users\Public\Documents\M2M2L5\gii.png

Filesize
317KB

MD5
dba8607e46cceda5dd57916a6bd8c7c7

SHA1
c99c80cb5d46035b05a7dedb6e7d22946ce2dd94

SHA256
8b44645c0bec9179cbb8ffd027395127d81ecc3b3ac5271b29e5221bc88ce10f

SHA512
76dedd75107e24dabf30893a720af642e49c513a5a1ec80d5c9cb1baed8c7f29023455cf3aa75a5f7de90b542dec6d13490a03d482755a8d301402e5914dd9af

Download Submit
C:\Users\Public\Documents\M2M2L5\lee_yeon_woo.hwp

Filesize
130KB

MD5
ebe2802b6afa5a08bcd83f8d5202fbc6

SHA1
7018f7332d98781236c3abc10097dae7dd53bb1f

SHA256
c074b60774ca11085dcd7f34772f2979769dd9ae38b0766fa7b829bb68d02a4a

SHA512
fb6d29a5889d2335ad348dfb772f2aa0d34caef4d0955c2924ad1bb1207ed24a06555341ad206ff10a035600a4299c0429952d6fc1305aebf2c82054628d6ed3

Download Submit
C:\Users\Public\Music\RBRBRA\7QAQAQ.url

Filesize
131B

MD5
1723ff9bbf9edecc53680d36b708452d

SHA1
7c0610ee41074447cb53f610afdf08e9acd794cc

SHA256
b77580838ea8e5fe7f81cce3bdef9638fa373e33e76545c6f0bdf73b47db1b12

SHA512
c79d588660a08464f1ae43e268e5ad5783326d7f9687640542cee376d057939d01770bf29645e6ce889549a170ba83b5e2a5d47e4000d6fe832c99d9b69fd2f5

Download Submit
C:\Users\Public\Music\RBRBRA\YHXH0H.url

Filesize
135B

MD5
b90ae5927771b170a911f043e4a2f6db

SHA1
284a12348b2a37c6e645e12c2528ee4134f1cb70

SHA256
f7bad0a6bdb97fbf2d1446475012db818bb65e0b26040628cfed5cdcfbcb571e

SHA512
1681be3c030e5d42fdd2857d4121e26df5cf5a8119506849d395dbb0a117708b5518732e47dcc1478742aa247fe46f1c7ffea9f1d0aba3bd67d7600529d11d68

Download Submit
C:\Users\Public\N63M2M

Filesize
2.0MB

MD5
49ca5d6fb817f9af89284dc0be61a1cf

SHA1
7b3d00869d8fb0266783250046ba0c11cf45ce18

SHA256
072eafa9fb2840f6588abe7b6c992d89192609996da4579951de4a0f4afec6c0

SHA512
ca1a3fb0f164e74d58ee190ba31a7bc6d8ef50c4ab63ed6f8ebcbd7df339a1de2aa6393eb694e288ab32b32668413331cf86d6ee0e06ecad1a838498bbf4946d

Download Submit
memory/268-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/268-89-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-97-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-59-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-57-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-95-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-55-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-92-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-65-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-63-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-64-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-91-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-83-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-60-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-86-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/268-87-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/2172-17-0x0000000003A90000-0x0000000003AA0000-memory.dmp

Filesize
64KB

Download
memory/2432-85-0x0000000010000000-0x0000000013601000-memory.dmp

Filesize
54.0MB

Download
memory/2432-50-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2432-62-0x0000000010000000-0x0000000013601000-memory.dmp

Filesize
54.0MB

Download
memory/2432-61-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download