nymaim | 33363a25a1d5dd1390067bacdea908ef9ab906e9e91970e90e1d82446562e32c

Analysis

max time kernel
69s
max time network
80s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 18:47

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General

Target

file.exe
Size

1.2MB
MD5

e28c126852fa8e1fb49b4a25afdca139
SHA1

faa978cf44979d4f203f65bc8f47ea090c0c2c06
SHA256

33363a25a1d5dd1390067bacdea908ef9ab906e9e91970e90e1d82446562e32c
SHA512

f7cfc4bdddc34de88f9f4efcdf0666d560f747bc6ccfbbca4ff76076c8779cda3f21615ae5c49e1eb135819aa08ba0046f86300e4ea5968b2c9d99c920d8d272
SSDEEP

24576:5izHOP9k0DH6CTZpAs6LQ34KliqS7Rr9K7+6z1Cs5z6xgZIY7eCLxYi3:yHOP9k0D712Q348aRrk7+ar6eNeVi3

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

Processes:

is-4O7HG.tmpPrintFolders.exexvMIhvkbzxrGM.exe

pid process

1712 is-4O7HG.tmp
2012 PrintFolders.exe
1356 xvMIhvkbzxrGM.exe

pid	process
1712	is-4O7HG.tmp
2012	PrintFolders.exe
1356	xvMIhvkbzxrGM.exe

Loads dropped DLL 10 IoCs

Processes:

file.exeis-4O7HG.tmpPrintFolders.exexvMIhvkbzxrGM.exe

pid	process
1708	file.exe
1712	is-4O7HG.tmp
1712	is-4O7HG.tmp
1712	is-4O7HG.tmp
1712	is-4O7HG.tmp
2012	PrintFolders.exe
2012	PrintFolders.exe
2012	PrintFolders.exe
1356	xvMIhvkbzxrGM.exe
1356	xvMIhvkbzxrGM.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

Processes:

is-4O7HG.tmp

description	ioc	process
File created	C:\Program Files (x86)\PrintFolders\is-10T2N.tmp	is-4O7HG.tmp
File created	C:\Program Files (x86)\PrintFolders\is-84LRH.tmp	is-4O7HG.tmp
File created	C:\Program Files (x86)\PrintFolders\is-B67NP.tmp	is-4O7HG.tmp
File created	C:\Program Files (x86)\PrintFolders\is-HVN6D.tmp	is-4O7HG.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-4O7HG.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-4O7HG.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MVKR7.tmp	is-4O7HG.tmp
File created	C:\Program Files (x86)\PrintFolders\is-L0QLP.tmp	is-4O7HG.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-4O7HG.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

Processes:

taskkill.exe

pid process

1072 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PrintFolders.exe

pid process

2012 PrintFolders.exe
2012 PrintFolders.exe
2012 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

is-4O7HG.tmptaskkill.exe

description pid process

Token: SeRestorePrivilege 1712 is-4O7HG.tmp
Token: SeBackupPrivilege 1712 is-4O7HG.tmp
Token: SeDebugPrivilege 1072 taskkill.exe

pid	process
1072	taskkill.exe

pid	process
2012	PrintFolders.exe
2012	PrintFolders.exe
2012	PrintFolders.exe

description	pid	process
Token: SeRestorePrivilege	1712	is-4O7HG.tmp
Token: SeBackupPrivilege	1712	is-4O7HG.tmp
Token: SeDebugPrivilege	1072	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

file.exeis-4O7HG.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1708 wrote to memory of 1712	1708	file.exe	is-4O7HG.tmp
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 1712 wrote to memory of 2012	1712	is-4O7HG.tmp	PrintFolders.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1356	2012	PrintFolders.exe	xvMIhvkbzxrGM.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1924	2012	PrintFolders.exe	cmd.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe
PID 1924 wrote to memory of 1072	1924	cmd.exe	taskkill.exe

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:1708

C:\Users\Admin\AppData\Local\Temp\is-VQB3Q.tmp\is-4O7HG.tmp
"C:\Users\Admin\AppData\Local\Temp\is-VQB3Q.tmp\is-4O7HG.tmp" /SL4 $A0022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1054280 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712

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:2012

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xvMIhvkbzxrGM.exe
4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1356

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:1924

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1072

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
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VQB3Q.tmp\is-4O7HG.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VQB3Q.tmp\is-4O7HG.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xvMIhvkbzxrGM.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xvMIhvkbzxrGM.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
\Users\Admin\AppData\Local\Temp\is-BMSEV.tmp\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-BMSEV.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-BMSEV.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-VQB3Q.tmp\is-4O7HG.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xvMIhvkbzxrGM.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xvMIhvkbzxrGM.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xvMIhvkbzxrGM.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1072-97-0x0000000000000000-mapping.dmp

Download
memory/1356-80-0x0000000000000000-mapping.dmp

Download
memory/1708-65-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1708-54-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download
memory/1708-98-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1708-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1712-86-0x0000000003090000-0x0000000004002000-memory.dmp

Filesize
15.4MB

Download
memory/1712-73-0x0000000003090000-0x0000000004002000-memory.dmp

Filesize
15.4MB

Download
memory/1712-58-0x0000000000000000-mapping.dmp

Download
memory/1924-94-0x0000000000000000-mapping.dmp

Download
memory/2012-74-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/2012-67-0x0000000000000000-mapping.dmp

Download
memory/2012-76-0x0000000001B30000-0x0000000002AA2000-memory.dmp

Filesize
15.4MB

Download
memory/2012-87-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/2012-88-0x0000000001B30000-0x0000000002AA2000-memory.dmp

Filesize
15.4MB

Download
memory/2012-89-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2012-93-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/2012-75-0x0000000001B30000-0x0000000002AA2000-memory.dmp

Filesize
15.4MB

Download
memory/2012-96-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/2012-78-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/2012-77-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download