3ed0c0f0bfd2d69df94c19ef494c9bb4ba2d87bb89f0dbc10b3e977434bfef0e

General

Target

bb2a6a8abb26d1bcb2f55d45f618b5f0.exe
Size

171KB
MD5

bb2a6a8abb26d1bcb2f55d45f618b5f0
SHA1

d76d4b88d56a79890a27d26167ba57ed1a99d926
SHA256

3ed0c0f0bfd2d69df94c19ef494c9bb4ba2d87bb89f0dbc10b3e977434bfef0e
SHA512

e5a3c26b8e897bc8533d66d10262e375fc162c97b373084d21ddf180261988274fedc5fedc6cb617dafb60ddf4ef8351ecc174de93aa75ece368c774dc565c17
SSDEEP

3072:9nOn7t7XpdpCCTg/sxFgJDIkCzh+MaG6gxVP/A5vVHDdqxYcgMiF03gWMRlscbC+:9KpdcCrTqSzhIJgx1/msepMiF03JMvsc

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2584	northstar.exe

Loads dropped DLL 3 IoCs

pid	Process
1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe
1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe
1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 4 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5\Blob = 190000000100000010000000d8b5fb368468620275d142ffd2aade370300000001000000140000004eb6d578499b1ccf5f581ead56be3d9b6744a5e51d0000000100000010000000c6cbcafa17955c4cfd41eca0c654c3610b000000010000001200000056006500720069005300690067006e0000001400000001000000140000007fd365a7c2ddecbbf03009f34339fa02af33313353000000010000002500000030233021060b6086480186f8450107170630123010060a2b0601040182373c0101030200c009000000010000002a000000302806082b0601050507030106082b0601050507030206082b0601050507030406082b060105050703030f0000000100000014000000e91e1e972b8f467ab4e0598fa92285387dee94c92000000001000000d7040000308204d3308203bba003020102021018dad19e267de8bb4a2158cdcc6b3b4a300d06092a864886f70d01010505003081ca310b300906035504061302555331173015060355040a130e566572695369676e2c20496e632e311f301d060355040b1316566572695369676e205472757374204e6574776f726b313a3038060355040b1331286329203230303620566572695369676e2c20496e632e202d20466f7220617574686f72697a656420757365206f6e6c79314530430603550403133c566572695369676e20436c6173732033205075626c6963205072696d6172792043657274696669636174696f6e20417574686f72697479202d204735301e170d3036313130383030303030305a170d3336303731363233353935395a3081ca310b300906035504061302555331173015060355040a130e566572695369676e2c20496e632e311f301d060355040b1316566572695369676e205472757374204e6574776f726b313a3038060355040b1331286329203230303620566572695369676e2c20496e632e202d20466f7220617574686f72697a656420757365206f6e6c79314530430603550403133c566572695369676e20436c6173732033205075626c6963205072696d6172792043657274696669636174696f6e20417574686f72697479202d20473530820122300d06092a864886f70d01010105000382010f003082010a0282010100af240808297a359e600caae74b3b4edc7cbc3c451cbb2be0fe2902f95708a364851527f5f1adc831895d22e82aaaa642b38ff8b955b7b1b74bb3fe8f7e0757ecef43db66621561cf600da4d8def8e0c362083d5413eb49ca59548526e52b8f1b9febf5a191c23349d843636a524bd28fe870514dd189697bc770f6b3dc1274db7b5d4b56d396bf1577a1b0f4a225f2af1c926718e5f40604ef90b9e400e4dd3ab519ff02baf43ceee08beb378becf4d7acf2f6f03dafdd759133191d1c40cb7424192193d914feac2a52c78fd50449e48d6347883c6983cbfe47bd2b7e4fc595ae0e9dd4d143c06773e314087ee53f9f73b8330acf5d3f3487968aee53e825150203010001a381b23081af300f0603551d130101ff040530030101ff300e0603551d0f0101ff040403020106306d06082b0601050507010c0461305fa15da05b3059305730551609696d6167652f6769663021301f300706052b0e03021a04148fe5d31a86ac8d8e6bc3cf806ad448182c7b192e30251623687474703a2f2f6c6f676f2e766572697369676e2e636f6d2f76736c6f676f2e676966301d0603551d0e041604147fd365a7c2ddecbbf03009f34339fa02af333133300d06092a864886f70d0101050500038201010093244a305f62cfd81a982f3deadc992dbd77f6a5792238ecc4a7a07812ad620e457064c5e797662d98097e5fafd6cc2865f201aa081a47def9f97c925a0869200dd93e6d6e3c0d6ed8e606914018b9f8c1eddfdb41aae09620c9cd64153881c994eea284290b136f8edb0cdd2502dba48b1944d2417a05694a584f60ca7e826a0b02aa251739b5db7fe784652a958abd86de5e8116832d10ccdefda8822a6d281f0d0bc4e5e71a2619e1f4116f10b595fce7420532dbce9d515e28b69e85d35befa57d4540728eb70e6b0e06fb33354871b89d278bc4655f0d86769c447af6955cf65d320833a454b6183f685cf2424a853854835fd1e82cf2ac11d6a8ed636a	northstar.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5\Blob = 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	northstar.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5	northstar.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5\Blob = 0f0000000100000014000000e91e1e972b8f467ab4e0598fa92285387dee94c909000000010000002a000000302806082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030353000000010000002500000030233021060b6086480186f8450107170630123010060a2b0601040182373c0101030200c01400000001000000140000007fd365a7c2ddecbbf03009f34339fa02af3331330b000000010000001200000056006500720069005300690067006e0000001d0000000100000010000000c6cbcafa17955c4cfd41eca0c654c3610300000001000000140000004eb6d578499b1ccf5f581ead56be3d9b6744a5e52000000001000000d7040000308204d3308203bba003020102021018dad19e267de8bb4a2158cdcc6b3b4a300d06092a864886f70d01010505003081ca310b300906035504061302555331173015060355040a130e566572695369676e2c20496e632e311f301d060355040b1316566572695369676e205472757374204e6574776f726b313a3038060355040b1331286329203230303620566572695369676e2c20496e632e202d20466f7220617574686f72697a656420757365206f6e6c79314530430603550403133c566572695369676e20436c6173732033205075626c6963205072696d6172792043657274696669636174696f6e20417574686f72697479202d204735301e170d3036313130383030303030305a170d3336303731363233353935395a3081ca310b300906035504061302555331173015060355040a130e566572695369676e2c20496e632e311f301d060355040b1316566572695369676e205472757374204e6574776f726b313a3038060355040b1331286329203230303620566572695369676e2c20496e632e202d20466f7220617574686f72697a656420757365206f6e6c79314530430603550403133c566572695369676e20436c6173732033205075626c6963205072696d6172792043657274696669636174696f6e20417574686f72697479202d20473530820122300d06092a864886f70d01010105000382010f003082010a0282010100af240808297a359e600caae74b3b4edc7cbc3c451cbb2be0fe2902f95708a364851527f5f1adc831895d22e82aaaa642b38ff8b955b7b1b74bb3fe8f7e0757ecef43db66621561cf600da4d8def8e0c362083d5413eb49ca59548526e52b8f1b9febf5a191c23349d843636a524bd28fe870514dd189697bc770f6b3dc1274db7b5d4b56d396bf1577a1b0f4a225f2af1c926718e5f40604ef90b9e400e4dd3ab519ff02baf43ceee08beb378becf4d7acf2f6f03dafdd759133191d1c40cb7424192193d914feac2a52c78fd50449e48d6347883c6983cbfe47bd2b7e4fc595ae0e9dd4d143c06773e314087ee53f9f73b8330acf5d3f3487968aee53e825150203010001a381b23081af300f0603551d130101ff040530030101ff300e0603551d0f0101ff040403020106306d06082b0601050507010c0461305fa15da05b3059305730551609696d6167652f6769663021301f300706052b0e03021a04148fe5d31a86ac8d8e6bc3cf806ad448182c7b192e30251623687474703a2f2f6c6f676f2e766572697369676e2e636f6d2f76736c6f676f2e676966301d0603551d0e041604147fd365a7c2ddecbbf03009f34339fa02af333133300d06092a864886f70d0101050500038201010093244a305f62cfd81a982f3deadc992dbd77f6a5792238ecc4a7a07812ad620e457064c5e797662d98097e5fafd6cc2865f201aa081a47def9f97c925a0869200dd93e6d6e3c0d6ed8e606914018b9f8c1eddfdb41aae09620c9cd64153881c994eea284290b136f8edb0cdd2502dba48b1944d2417a05694a584f60ca7e826a0b02aa251739b5db7fe784652a958abd86de5e8116832d10ccdefda8822a6d281f0d0bc4e5e71a2619e1f4116f10b595fce7420532dbce9d515e28b69e85d35befa57d4540728eb70e6b0e06fb33354871b89d278bc4655f0d86769c447af6955cf65d320833a454b6183f685cf2424a853854835fd1e82cf2ac11d6a8ed636a	northstar.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2584	northstar.exe
2584	northstar.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 2584	1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe	28
PID 1500 wrote to memory of 2584	1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe	28
PID 1500 wrote to memory of 2584	1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe	28
PID 1500 wrote to memory of 2584	1500	bb2a6a8abb26d1bcb2f55d45f618b5f0.exe	28

C:\Users\Admin\AppData\Local\Temp\bb2a6a8abb26d1bcb2f55d45f618b5f0.exe
"C:\Users\Admin\AppData\Local\Temp\bb2a6a8abb26d1bcb2f55d45f618b5f0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Users\Admin\AppData\Local\Temp\nst848D.tmp\northstar.exe
  C:\Users\Admin\AppData\Local\Temp\nst848D.tmp\northstar.exe /u4fe0cf9f-1fe4-4abb-905a-57915bc06f2f /e5426026 /dT201301082050
  2⤵
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of SetWindowsHookEx
  PID:2584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

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\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
67KB

MD5
753df6889fd7410a2e9fe333da83a429

SHA1
3c425f16e8267186061dd48ac1c77c122962456e

SHA256
b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

SHA512
9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar9850.tmp

Filesize
175KB

MD5
dd73cead4b93366cf3465c8cd32e2796

SHA1
74546226dfe9ceb8184651e920d1dbfb432b314e

SHA256
a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

SHA512
ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

Download Submit
\Users\Admin\AppData\Local\Temp\nst848D.tmp\System.dll

Filesize
21KB

MD5
5ebc73650256e9c8ddbcda231db829a1

SHA1
988d4535e18754ab2a6248abae96c5697d7dbcd5

SHA256
1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

SHA512
b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

Download Submit
\Users\Admin\AppData\Local\Temp\nst848D.tmp\northstar.exe

Filesize
275KB

MD5
a1e2472db630c7043c2fb486a17300bc

SHA1
f289644ce703d4050b49ec0606c543a8f3928624

SHA256
0e990e290a6c3b4b3a3ac7495bfc197b698799ae840a06586eb5d5cbe74a1bd7

SHA512
3571478424b464b17ef58f43ffca57e09e539e4b83ed1a158694ab4f473001ceb37cb72c850d701767625d515f129a14a1f60446ace745517658923467b01823

Download Submit
memory/1500-66-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1500-95-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1500-67-0x000000006E3C0000-0x000000006E3CD000-memory.dmp

Filesize
52KB

Download
memory/2584-17-0x0000000002060000-0x00000000020A0000-memory.dmp

Filesize
256KB

Download
memory/2584-16-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2584-84-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2584-87-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2584-88-0x0000000002060000-0x00000000020A0000-memory.dmp

Filesize
256KB

Download
memory/2584-89-0x0000000002060000-0x00000000020A0000-memory.dmp

Filesize
256KB

Download
memory/2584-90-0x0000000002060000-0x00000000020A0000-memory.dmp

Filesize
256KB

Download
memory/2584-91-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2584-15-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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