Analysis
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max time kernel
149s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
16/03/2024, 04:06
Behavioral task
behavioral1
Sample
2c09b4fa748f98a21a8352b6f03ce5e3ae385e1e2aa3b9138fb334a2d4a4fdbc.zip
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2c09b4fa748f98a21a8352b6f03ce5e3ae385e1e2aa3b9138fb334a2d4a4fdbc.zip
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
ab.exe
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
ab.exe
Resource
win10v2004-20240226-en
General
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Target
ab.exe
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Size
775KB
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MD5
0b486fe0503524cfe4726a4022fa6a68
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SHA1
297dea71d489768ce45d23b0f8a45424b469ab00
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SHA256
1228d0f04f0ba82569fc1c0609f9fd6c377a91b9ea44c1e7f9f84b2b90552da2
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SHA512
f4273ca5cc3a9360af67f4b4ee0bf067cf218c5dc8caeafbfa1b809715effe742f2e1f54e4fe9ec8d4b8e3ae697d57f91c2b49bdf203648508d75d4a76f53619
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SSDEEP
24576:TCs99+OXLpMePfI8TgmBTCDqEbOpPtpFhyxfq:5GOXLpMePfzVTCD7gPtLhSfq
Malware Config
Extracted
C:\Users\Admin\Documents\XROHK_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Desktop\XROHK_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Documents\XROHK_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Downloads\XROHK_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Pictures\XROHK_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Signatures
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Avaddon
Ransomware-as-a-service first released in June 2020 and currently expanding its userbase among criminal actors.
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Avaddon payload 1 IoCs
resource yara_rule behavioral3/files/0x000c00000001224c-633.dat family_avaddon -
Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2656 1648 wmic.exe 28 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2568 1648 wmic.exe 28 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1964 1648 wmic.exe 28 -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ab.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" ab.exe -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (211) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
pid Process 2724 ab.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ab.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-330940541-141609230-1670313778-1000\desktop.ini ab.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\H: ab.exe File opened (read-only) \??\J: ab.exe File opened (read-only) \??\N: ab.exe File opened (read-only) \??\O: ab.exe File opened (read-only) \??\P: ab.exe File opened (read-only) \??\S: ab.exe File opened (read-only) \??\X: ab.exe File opened (read-only) \??\A: ab.exe File opened (read-only) \??\E: ab.exe File opened (read-only) \??\Q: ab.exe File opened (read-only) \??\V: ab.exe File opened (read-only) \??\B: ab.exe File opened (read-only) \??\L: ab.exe File opened (read-only) \??\U: ab.exe File opened (read-only) \??\W: ab.exe File opened (read-only) \??\Y: ab.exe File opened (read-only) \??\F: ab.exe File opened (read-only) \??\G: ab.exe File opened (read-only) \??\I: ab.exe File opened (read-only) \??\K: ab.exe File opened (read-only) \??\M: ab.exe File opened (read-only) \??\R: ab.exe File opened (read-only) \??\T: ab.exe File opened (read-only) \??\Z: ab.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1904 vssadmin.exe 1436 vssadmin.exe 1532 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe 1132 ab.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2656 wmic.exe Token: SeSecurityPrivilege 2656 wmic.exe Token: SeTakeOwnershipPrivilege 2656 wmic.exe Token: SeLoadDriverPrivilege 2656 wmic.exe Token: SeSystemProfilePrivilege 2656 wmic.exe Token: SeSystemtimePrivilege 2656 wmic.exe Token: SeProfSingleProcessPrivilege 2656 wmic.exe Token: SeIncBasePriorityPrivilege 2656 wmic.exe Token: SeCreatePagefilePrivilege 2656 wmic.exe Token: SeBackupPrivilege 2656 wmic.exe Token: SeRestorePrivilege 2656 wmic.exe Token: SeShutdownPrivilege 2656 wmic.exe Token: SeDebugPrivilege 2656 wmic.exe Token: SeSystemEnvironmentPrivilege 2656 wmic.exe Token: SeRemoteShutdownPrivilege 2656 wmic.exe Token: SeUndockPrivilege 2656 wmic.exe Token: SeManageVolumePrivilege 2656 wmic.exe Token: 33 2656 wmic.exe Token: 34 2656 wmic.exe Token: 35 2656 wmic.exe Token: SeIncreaseQuotaPrivilege 1964 wmic.exe Token: SeSecurityPrivilege 1964 wmic.exe Token: SeTakeOwnershipPrivilege 1964 wmic.exe Token: SeLoadDriverPrivilege 1964 wmic.exe Token: SeSystemProfilePrivilege 1964 wmic.exe Token: SeSystemtimePrivilege 1964 wmic.exe Token: SeProfSingleProcessPrivilege 1964 wmic.exe Token: SeIncBasePriorityPrivilege 1964 wmic.exe Token: SeCreatePagefilePrivilege 1964 wmic.exe Token: SeBackupPrivilege 1964 wmic.exe Token: SeRestorePrivilege 1964 wmic.exe Token: SeShutdownPrivilege 1964 wmic.exe Token: SeDebugPrivilege 1964 wmic.exe Token: SeSystemEnvironmentPrivilege 1964 wmic.exe Token: SeRemoteShutdownPrivilege 1964 wmic.exe Token: SeUndockPrivilege 1964 wmic.exe Token: SeManageVolumePrivilege 1964 wmic.exe Token: 33 1964 wmic.exe Token: 34 1964 wmic.exe Token: 35 1964 wmic.exe Token: SeIncreaseQuotaPrivilege 2568 wmic.exe Token: SeSecurityPrivilege 2568 wmic.exe Token: SeTakeOwnershipPrivilege 2568 wmic.exe Token: SeLoadDriverPrivilege 2568 wmic.exe Token: SeSystemProfilePrivilege 2568 wmic.exe Token: SeSystemtimePrivilege 2568 wmic.exe Token: SeProfSingleProcessPrivilege 2568 wmic.exe Token: SeIncBasePriorityPrivilege 2568 wmic.exe Token: SeCreatePagefilePrivilege 2568 wmic.exe Token: SeBackupPrivilege 2568 wmic.exe Token: SeRestorePrivilege 2568 wmic.exe Token: SeShutdownPrivilege 2568 wmic.exe Token: SeDebugPrivilege 2568 wmic.exe Token: SeSystemEnvironmentPrivilege 2568 wmic.exe Token: SeRemoteShutdownPrivilege 2568 wmic.exe Token: SeUndockPrivilege 2568 wmic.exe Token: SeManageVolumePrivilege 2568 wmic.exe Token: 33 2568 wmic.exe Token: 34 2568 wmic.exe Token: 35 2568 wmic.exe Token: SeIncreaseQuotaPrivilege 2656 wmic.exe Token: SeSecurityPrivilege 2656 wmic.exe Token: SeTakeOwnershipPrivilege 2656 wmic.exe Token: SeLoadDriverPrivilege 2656 wmic.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 1132 wrote to memory of 2520 1132 ab.exe 35 PID 1132 wrote to memory of 2520 1132 ab.exe 35 PID 1132 wrote to memory of 2520 1132 ab.exe 35 PID 1132 wrote to memory of 2520 1132 ab.exe 35 PID 1132 wrote to memory of 1904 1132 ab.exe 40 PID 1132 wrote to memory of 1904 1132 ab.exe 40 PID 1132 wrote to memory of 1904 1132 ab.exe 40 PID 1132 wrote to memory of 1904 1132 ab.exe 40 PID 1132 wrote to memory of 1908 1132 ab.exe 42 PID 1132 wrote to memory of 1908 1132 ab.exe 42 PID 1132 wrote to memory of 1908 1132 ab.exe 42 PID 1132 wrote to memory of 1908 1132 ab.exe 42 PID 1132 wrote to memory of 1436 1132 ab.exe 44 PID 1132 wrote to memory of 1436 1132 ab.exe 44 PID 1132 wrote to memory of 1436 1132 ab.exe 44 PID 1132 wrote to memory of 1436 1132 ab.exe 44 PID 1132 wrote to memory of 1592 1132 ab.exe 46 PID 1132 wrote to memory of 1592 1132 ab.exe 46 PID 1132 wrote to memory of 1592 1132 ab.exe 46 PID 1132 wrote to memory of 1592 1132 ab.exe 46 PID 1132 wrote to memory of 1532 1132 ab.exe 48 PID 1132 wrote to memory of 1532 1132 ab.exe 48 PID 1132 wrote to memory of 1532 1132 ab.exe 48 PID 1132 wrote to memory of 1532 1132 ab.exe 48 PID 2320 wrote to memory of 2724 2320 taskeng.exe 54 PID 2320 wrote to memory of 2724 2320 taskeng.exe 54 PID 2320 wrote to memory of 2724 2320 taskeng.exe 54 PID 2320 wrote to memory of 2724 2320 taskeng.exe 54 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ab.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" ab.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" ab.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\ab.exe"C:\Users\Admin\AppData\Local\Temp\ab.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1132 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive2⤵PID:2520
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C:\Windows\SysWOW64\vssadmin.exevssadmin Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:1904
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C:\Windows\SysWOW64\Wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive2⤵PID:1908
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C:\Windows\SysWOW64\vssadmin.exevssadmin Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:1436
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C:\Windows\SysWOW64\Wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive2⤵PID:1592
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C:\Windows\SysWOW64\vssadmin.exevssadmin Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:1532
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C:\Windows\system32\wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive1⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:2656
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C:\Windows\system32\wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive1⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:2568
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C:\Windows\system32\wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive1⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:1964
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵PID:2612
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C:\Windows\system32\taskeng.exetaskeng.exe {FE94C0AC-690B-4D39-8C00-6512A218AC59} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2320 -
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ab.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\ab.exe2⤵
- Executes dropped EXE
PID:2724
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
775KB
MD50b486fe0503524cfe4726a4022fa6a68
SHA1297dea71d489768ce45d23b0f8a45424b469ab00
SHA2561228d0f04f0ba82569fc1c0609f9fd6c377a91b9ea44c1e7f9f84b2b90552da2
SHA512f4273ca5cc3a9360af67f4b4ee0bf067cf218c5dc8caeafbfa1b809715effe742f2e1f54e4fe9ec8d4b8e3ae697d57f91c2b49bdf203648508d75d4a76f53619
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Filesize
3KB
MD5815944c42afb67c6ec6c8da891e221e0
SHA1b71628bb20ed8e4b6a0792025a0094753e4fdeb8
SHA256ab049ee3604eb9be202e097dadaeb9d309f8e34cd81534a985f77cee85ae4657
SHA512a29fe43c451f5f8bf8fca96de843e53cc8302ade10bb49c9ee4871a08afddd2f4a00efb4b47b8441450039f42bd614fd3df75690d12bf6dbd75547e4a2e7019f
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Filesize
3KB
MD513b03c0a543b77b2aa17c9ca920b62e1
SHA1b9fae0765101720b39ad94b559d29c87cc52888d
SHA256d3eeb9ac65685a5b2fb0189bb6744cb9753aa89c71d6bcd897147b12875f08a7
SHA512261bfb283aa0b6c7b2087070a844ce5e4855d84c73c6bc00017b91bdb18c2c88f86ab82fb1942afb89f463bab26a34e132403ebef14d648c7be2ef6eba862504
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Filesize
3KB
MD54079c201aa100b35ad5ed2213c55f317
SHA1256508e7a3fb692734e92591dcc5f143628ba422
SHA256918ce2bb9fd18db7719e8586595ad324d53ed707e539714a56ff42f1ee6df526
SHA5123cd9b579a15320341175c9fb35fcf9a99242147e065a2bffda8d827e325413bb3fc6838eea4ef9ff4554ca25adcf256658c1705d26c9078afd9635283a52d786
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Filesize
3KB
MD5d294998cf61218c781f7b094f9783203
SHA1b64a57e56e8a65702a36217eb546ab2d7d2b1abc
SHA2565584b85cf8bf631dd28c2f4a96957035d107dc6d32a2edbdc9bb3f5bbfeb2853
SHA512762753da014093e8bc9818d0233190642256cd5462a49d4dfd9c491c975b6b8da3cf7d80cd25af3f5530f14d442d2e81ea6ecb92528c016781600f860d79d875
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Filesize
3KB
MD5b9ff3661c392fff60c863c219c351863
SHA12c97de5f7a215f64e8855e3480485d7f6e82c9cc
SHA256e09d8e02463f67bd0563d19bc16f75fdd182feae43009d931f74031a461a1057
SHA5129b926c523184046c6734d687257d7d5886fcef64d634c970d804e86804fbb62e537404d7e1dd581e76a065cf55bdbba8b1b3ef4a78adcfbdc5d01b66ae827944