nymaim | 3923aa70536c40ca20c862b32dc27b8794f7fca9a6cc8da3a71f75bcd5ff12ce

Analysis

max time kernel
60s
max time network
66s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 21:46

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General

Target

file.exe
Size

1.2MB
MD5

87151b2221a9b46ac07725d19f69d596
SHA1

8479360ecf820bd4f82c74cf6cc6e64c4508c2eb
SHA256

3923aa70536c40ca20c862b32dc27b8794f7fca9a6cc8da3a71f75bcd5ff12ce
SHA512

f053e959a794d2155e182fe3520b86499d344056114def9712a704889da3c7a11634b3f9b1a24a5dbe38c62a6f2fb7afee94f8b44afc9e86b1f9db2023ac49a1
SSDEEP

24576:1izNrcaeq/KnObualadBfN6mznT5C+FI+An/yQ60gZIY7eCLxYiq:eNwObugKBNTNCWI+An/yQYNeViq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1272	is-EOPOB.tmp
1072	PrintFolders.exe
1528	2oJjLymT.exe

Loads dropped DLL 10 IoCs

pid	Process
1632	file.exe
1272	is-EOPOB.tmp
1272	is-EOPOB.tmp
1272	is-EOPOB.tmp
1272	is-EOPOB.tmp
1072	PrintFolders.exe
1072	PrintFolders.exe
1072	PrintFolders.exe
1528	2oJjLymT.exe
1528	2oJjLymT.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-EOPOB.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-CVAQB.tmp	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P2KAO.tmp	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-TEER0.tmp	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MS49E.tmp	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P2RN3.tmp	is-EOPOB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-8GQT5.tmp	is-EOPOB.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1352	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1072	PrintFolders.exe
1072	PrintFolders.exe
1072	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1272	is-EOPOB.tmp
Token: SeBackupPrivilege	1272	is-EOPOB.tmp
Token: SeDebugPrivilege	1352	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1632 wrote to memory of 1272	1632	file.exe	28
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1272 wrote to memory of 1072	1272	is-EOPOB.tmp	29
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 1528	1072	PrintFolders.exe	30
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 1072 wrote to memory of 2016	1072	PrintFolders.exe	33
PID 2016 wrote to memory of 1352	2016	cmd.exe	35
PID 2016 wrote to memory of 1352	2016	cmd.exe	35
PID 2016 wrote to memory of 1352	2016	cmd.exe	35
PID 2016 wrote to memory of 1352	2016	cmd.exe	35
PID 2016 wrote to memory of 1352	2016	cmd.exe	35
PID 2016 wrote to memory of 1352	2016	cmd.exe	35
PID 2016 wrote to memory of 1352	2016	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\AppData\Local\Temp\is-R2S7E.tmp\is-EOPOB.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-R2S7E.tmp\is-EOPOB.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1069308 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1272
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1072
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\2oJjLymT.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1528
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2016
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
91fba4cc45c26464d2ac29583259b020

SHA1
007ef78a8d36b126dcaacb30d54fcbdc3ae159ff

SHA256
3e72d7129c3fa573420ccd78f4ed9784226027d10daa8f2015045d387501948d

SHA512
022eb16c1833e1c6579d68755a8674f06c12461321d478be475b9b149ce4952dace8817a4f1f4cda14e8a472939d55ed4848482f39607504115719450d9432ca

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
91fba4cc45c26464d2ac29583259b020

SHA1
007ef78a8d36b126dcaacb30d54fcbdc3ae159ff

SHA256
3e72d7129c3fa573420ccd78f4ed9784226027d10daa8f2015045d387501948d

SHA512
022eb16c1833e1c6579d68755a8674f06c12461321d478be475b9b149ce4952dace8817a4f1f4cda14e8a472939d55ed4848482f39607504115719450d9432ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-R2S7E.tmp\is-EOPOB.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-R2S7E.tmp\is-EOPOB.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\2oJjLymT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\2oJjLymT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
91fba4cc45c26464d2ac29583259b020

SHA1
007ef78a8d36b126dcaacb30d54fcbdc3ae159ff

SHA256
3e72d7129c3fa573420ccd78f4ed9784226027d10daa8f2015045d387501948d

SHA512
022eb16c1833e1c6579d68755a8674f06c12461321d478be475b9b149ce4952dace8817a4f1f4cda14e8a472939d55ed4848482f39607504115719450d9432ca

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
91fba4cc45c26464d2ac29583259b020

SHA1
007ef78a8d36b126dcaacb30d54fcbdc3ae159ff

SHA256
3e72d7129c3fa573420ccd78f4ed9784226027d10daa8f2015045d387501948d

SHA512
022eb16c1833e1c6579d68755a8674f06c12461321d478be475b9b149ce4952dace8817a4f1f4cda14e8a472939d55ed4848482f39607504115719450d9432ca

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
91fba4cc45c26464d2ac29583259b020

SHA1
007ef78a8d36b126dcaacb30d54fcbdc3ae159ff

SHA256
3e72d7129c3fa573420ccd78f4ed9784226027d10daa8f2015045d387501948d

SHA512
022eb16c1833e1c6579d68755a8674f06c12461321d478be475b9b149ce4952dace8817a4f1f4cda14e8a472939d55ed4848482f39607504115719450d9432ca

Download Submit
\Users\Admin\AppData\Local\Temp\is-9PKB7.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-9PKB7.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-9PKB7.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-R2S7E.tmp\is-EOPOB.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\2oJjLymT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\2oJjLymT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\2oJjLymT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1072-92-0x0000000001BA0000-0x0000000002B12000-memory.dmp

Filesize
15.4MB

Download
memory/1072-77-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/1072-97-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/1072-86-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1072-93-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/1072-78-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/1072-67-0x0000000000000000-mapping.dmp

Download
memory/1072-91-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/1072-76-0x0000000001BA0000-0x0000000002B12000-memory.dmp

Filesize
15.4MB

Download
memory/1072-74-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/1072-75-0x0000000001BA0000-0x0000000002B12000-memory.dmp

Filesize
15.4MB

Download
memory/1272-58-0x0000000000000000-mapping.dmp

Download
memory/1272-90-0x0000000003040000-0x0000000003FB2000-memory.dmp

Filesize
15.4MB

Download
memory/1272-73-0x0000000003040000-0x0000000003FB2000-memory.dmp

Filesize
15.4MB

Download
memory/1352-96-0x0000000000000000-mapping.dmp

Download
memory/1528-80-0x0000000000000000-mapping.dmp

Download
memory/1632-62-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1632-54-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

Filesize
8KB

Download
memory/1632-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1632-99-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2016-94-0x0000000000000000-mapping.dmp

Download