nymaim | 5b2233757b02d608b3433d978aed7afd542db3202d543b7dfaab405c0d67d46f

Analysis

max time kernel
107s
max time network
165s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 04:17

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General

Target

file.exe
Size

1.2MB
MD5

6d4b1775fbd0a4627d1de926b46bc256
SHA1

a12b3c0b70e30b3033cdd2fa37f3104214fa7a1c
SHA256

5b2233757b02d608b3433d978aed7afd542db3202d543b7dfaab405c0d67d46f
SHA512

5467c2fb7c634932dce74aa458dffe6d1837f497ca0fe4791544ca8f873916fe583f173c6b06a80e39205fcf407f292f7fffb524c755f33e87fa786bb0b69750
SSDEEP

24576:1izs4FgS8zfwJbvzgmlSTJOVzSHHpJIZvrdKVShZoDfcJPVNFyEi7gZIY7eCLxYU:esmgXzoJvtSVOVzRZvZKVsZogtZNeViX

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-0BFOO.tmpPrintFolders.exebfJ92.exe

pid process

1984 is-0BFOO.tmp
676 PrintFolders.exe
1704 bfJ92.exe

pid	process
1984	is-0BFOO.tmp
676	PrintFolders.exe
1704	bfJ92.exe

Loads dropped DLL 10 IoCs

Processes:

file.exeis-0BFOO.tmpPrintFolders.exebfJ92.exe

pid	process
1420	file.exe
1984	is-0BFOO.tmp
1984	is-0BFOO.tmp
1984	is-0BFOO.tmp
1984	is-0BFOO.tmp
676	PrintFolders.exe
676	PrintFolders.exe
676	PrintFolders.exe
1704	bfJ92.exe
1704	bfJ92.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-0BFOO.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\is-HH9KV.tmp	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\is-DJJ1V.tmp	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\is-SB067.tmp	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\is-V490V.tmp	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\is-HF9JO.tmp	is-0BFOO.tmp
File created	C:\Program Files (x86)\PrintFolders\is-ACQEA.tmp	is-0BFOO.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-0BFOO.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

1396 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PrintFolders.exe

pid process

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

Processes:

is-0BFOO.tmptaskkill.exe

description pid process

Token: SeRestorePrivilege 1984 is-0BFOO.tmp
Token: SeBackupPrivilege 1984 is-0BFOO.tmp
Token: SeDebugPrivilege 1396 taskkill.exe

pid	process
1396	taskkill.exe

pid	process
676	PrintFolders.exe
676	PrintFolders.exe
676	PrintFolders.exe

description	pid	process
Token: SeRestorePrivilege	1984	is-0BFOO.tmp
Token: SeBackupPrivilege	1984	is-0BFOO.tmp
Token: SeDebugPrivilege	1396	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

file.exeis-0BFOO.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1420 wrote to memory of 1984	1420	file.exe	is-0BFOO.tmp
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 1984 wrote to memory of 676	1984	is-0BFOO.tmp	PrintFolders.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1704	676	PrintFolders.exe	bfJ92.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 676 wrote to memory of 1548	676	PrintFolders.exe	cmd.exe
PID 1548 wrote to memory of 1396	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 1396	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 1396	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 1396	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 1396	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 1396	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 1396	1548	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:1420

C:\Users\Admin\AppData\Local\Temp\is-3U3JA.tmp\is-0BFOO.tmp
"C:\Users\Admin\AppData\Local\Temp\is-3U3JA.tmp\is-0BFOO.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1069474 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1984

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:676

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\bfJ92.exe
4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1704

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:1548

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1396

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
b97f77518e9041a89f19c207a1900940

SHA1
e101a79a0eb00b737565f3fc80ceab8b63a7a4b0

SHA256
67ac056dbedeec4dd21e59611b96e30706817f8f941d0734b4629fc904fdd216

SHA512
60d3e2e72d16c61d1ec216040991a74aba7220a6c473dd4d7ccd5f2ccd941c1ca598edf59460cc4a0997b10e01dc015afe07f1f55f985059d2cd417f91241428

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

Filesize
1.4MB

MD5
b97f77518e9041a89f19c207a1900940

SHA1
e101a79a0eb00b737565f3fc80ceab8b63a7a4b0

SHA256
67ac056dbedeec4dd21e59611b96e30706817f8f941d0734b4629fc904fdd216

SHA512
60d3e2e72d16c61d1ec216040991a74aba7220a6c473dd4d7ccd5f2ccd941c1ca598edf59460cc4a0997b10e01dc015afe07f1f55f985059d2cd417f91241428

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3U3JA.tmp\is-0BFOO.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3U3JA.tmp\is-0BFOO.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\bfJ92.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\bfJ92.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
1.4MB

MD5
b97f77518e9041a89f19c207a1900940

SHA1
e101a79a0eb00b737565f3fc80ceab8b63a7a4b0

SHA256
67ac056dbedeec4dd21e59611b96e30706817f8f941d0734b4629fc904fdd216

SHA512
60d3e2e72d16c61d1ec216040991a74aba7220a6c473dd4d7ccd5f2ccd941c1ca598edf59460cc4a0997b10e01dc015afe07f1f55f985059d2cd417f91241428

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

Filesize
1.4MB

MD5
b97f77518e9041a89f19c207a1900940

SHA1
e101a79a0eb00b737565f3fc80ceab8b63a7a4b0

SHA256
67ac056dbedeec4dd21e59611b96e30706817f8f941d0734b4629fc904fdd216

SHA512
60d3e2e72d16c61d1ec216040991a74aba7220a6c473dd4d7ccd5f2ccd941c1ca598edf59460cc4a0997b10e01dc015afe07f1f55f985059d2cd417f91241428

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

Filesize
1.4MB

MD5
b97f77518e9041a89f19c207a1900940

SHA1
e101a79a0eb00b737565f3fc80ceab8b63a7a4b0

SHA256
67ac056dbedeec4dd21e59611b96e30706817f8f941d0734b4629fc904fdd216

SHA512
60d3e2e72d16c61d1ec216040991a74aba7220a6c473dd4d7ccd5f2ccd941c1ca598edf59460cc4a0997b10e01dc015afe07f1f55f985059d2cd417f91241428

Download Submit
\Users\Admin\AppData\Local\Temp\is-3U3JA.tmp\is-0BFOO.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\bfJ92.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\bfJ92.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\bfJ92.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/676-80-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/676-93-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/676-75-0x0000000001840000-0x00000000027B2000-memory.dmp

Filesize
15.4MB

Download
memory/676-76-0x0000000001840000-0x00000000027B2000-memory.dmp

Filesize
15.4MB

Download
memory/676-77-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/676-97-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/676-79-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/676-89-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/676-70-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/676-88-0x0000000001840000-0x00000000027B2000-memory.dmp

Filesize
15.4MB

Download
memory/676-67-0x0000000000000000-mapping.dmp

Download
memory/1396-96-0x0000000000000000-mapping.dmp

Download
memory/1420-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1420-54-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download
memory/1420-62-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1420-98-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1548-94-0x0000000000000000-mapping.dmp

Download
memory/1704-82-0x0000000000000000-mapping.dmp

Download
memory/1984-69-0x0000000002F40000-0x0000000003EB2000-memory.dmp

Filesize
15.4MB

Download
memory/1984-58-0x0000000000000000-mapping.dmp

Download
memory/1984-78-0x0000000002F40000-0x0000000003EB2000-memory.dmp

Filesize
15.4MB

Download